86 Cherokee overheating problem
08-15-2004, 06:01 PM
#11
Guest
Posts: n/a
Re: 86 Cherokee overheating problem
Thank you JoBo and Mike for your input. Still working on the problem of
overheating. Also seems to not getting full power under load. It Bogs down
going up a hill and seems to have problems during the lower range of the
Rpms. The Fan clutch seems to be fine. Has the same stiffness in it when
hot as when cold. I did notice that the water seemed to flow into the
radiator faster than out when revving up the engine a bit. It came up thru
the cap every time I increased the engine's Rpms It is a one row radiator
but looks real clean inside and a small wire easily passes thru the tubes I
can get to under the cap area. Tried to ask the Jeep Creep for help but so
far he has not responded. Any help would be appreciated. Thanks Don
"Don Smith" <desmith@innercite.com> wrote in message
news:10hs8sgt6ct7s01@corp.supernews.com...
> Good evening,
> I have a 1986 Jeep Cherokee Pioneer with a 2.46L 4-150 engine with an
> overheating problem. I just purchased it as a basket case and am trying
to
> get it back on the road again. I found that there were two bad valves in
> the number two cylinder. The intake valve was burned through with a large
> grove across the face. The exhaust valve had gotten so hot that it had
> Cupped and sat too low in the seat. The head had a complete professional
> valve job and was shaved slightly to ensure it was not warped. After it
was
> installed the engine ran rich and I found a hose was disconnected from the
> Mapp sensor. I also found that someone had installed the wrong O2 sensor
> and it was replaced with the correct one. The radiator has been flushed a
> couple of times and now seems clean. There is a slight leak in the
radiator
> between the converter and muffler. It seems to idle fine but has a
> sluggish pickup in engine RPM. Also backfires once in a while and wants
to
> get hot climbing even a small hill. Timing seems to be slightly higher
than
> 12 BTDC. Have not checked the fuel filter as of yet. I cannot seem to
find
> any information as to the correct hose connections that had to be removed
> when doing the valve job. All seem to be correct but cannot tell for
sure.
> Can you advise any other areas to check and perhaps point me to a site
where
> the hose diagram might be found? Thanks Don Smith
>
>
>
>
>
> ---
> Outgoing mail is certified Virus Free.
> Checked by AVG anti-virus system (http://www.grisoft.com).
> Version: 6.0.735 / Virus Database: 489 - Release Date: 8/11/04
>
>
---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
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overheating. Also seems to not getting full power under load. It Bogs down
going up a hill and seems to have problems during the lower range of the
Rpms. The Fan clutch seems to be fine. Has the same stiffness in it when
hot as when cold. I did notice that the water seemed to flow into the
radiator faster than out when revving up the engine a bit. It came up thru
the cap every time I increased the engine's Rpms It is a one row radiator
but looks real clean inside and a small wire easily passes thru the tubes I
can get to under the cap area. Tried to ask the Jeep Creep for help but so
far he has not responded. Any help would be appreciated. Thanks Don
"Don Smith" <desmith@innercite.com> wrote in message
news:10hs8sgt6ct7s01@corp.supernews.com...
> Good evening,
> I have a 1986 Jeep Cherokee Pioneer with a 2.46L 4-150 engine with an
> overheating problem. I just purchased it as a basket case and am trying
to
> get it back on the road again. I found that there were two bad valves in
> the number two cylinder. The intake valve was burned through with a large
> grove across the face. The exhaust valve had gotten so hot that it had
> Cupped and sat too low in the seat. The head had a complete professional
> valve job and was shaved slightly to ensure it was not warped. After it
was
> installed the engine ran rich and I found a hose was disconnected from the
> Mapp sensor. I also found that someone had installed the wrong O2 sensor
> and it was replaced with the correct one. The radiator has been flushed a
> couple of times and now seems clean. There is a slight leak in the
radiator
> between the converter and muffler. It seems to idle fine but has a
> sluggish pickup in engine RPM. Also backfires once in a while and wants
to
> get hot climbing even a small hill. Timing seems to be slightly higher
than
> 12 BTDC. Have not checked the fuel filter as of yet. I cannot seem to
find
> any information as to the correct hose connections that had to be removed
> when doing the valve job. All seem to be correct but cannot tell for
sure.
> Can you advise any other areas to check and perhaps point me to a site
where
> the hose diagram might be found? Thanks Don Smith
>
>
>
>
>
> ---
> Outgoing mail is certified Virus Free.
> Checked by AVG anti-virus system (http://www.grisoft.com).
> Version: 6.0.735 / Virus Database: 489 - Release Date: 8/11/04
>
>
---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.735 / Virus Database: 489 - Release Date: 8/12/04
08-15-2004, 06:01 PM
#12
Guest
Posts: n/a
Re: 86 Cherokee overheating problem
Thank you JoBo and Mike for your input. Still working on the problem of
overheating. Also seems to not getting full power under load. It Bogs down
going up a hill and seems to have problems during the lower range of the
Rpms. The Fan clutch seems to be fine. Has the same stiffness in it when
hot as when cold. I did notice that the water seemed to flow into the
radiator faster than out when revving up the engine a bit. It came up thru
the cap every time I increased the engine's Rpms It is a one row radiator
but looks real clean inside and a small wire easily passes thru the tubes I
can get to under the cap area. Tried to ask the Jeep Creep for help but so
far he has not responded. Any help would be appreciated. Thanks Don
"Don Smith" <desmith@innercite.com> wrote in message
news:10hs8sgt6ct7s01@corp.supernews.com...
> Good evening,
> I have a 1986 Jeep Cherokee Pioneer with a 2.46L 4-150 engine with an
> overheating problem. I just purchased it as a basket case and am trying
to
> get it back on the road again. I found that there were two bad valves in
> the number two cylinder. The intake valve was burned through with a large
> grove across the face. The exhaust valve had gotten so hot that it had
> Cupped and sat too low in the seat. The head had a complete professional
> valve job and was shaved slightly to ensure it was not warped. After it
was
> installed the engine ran rich and I found a hose was disconnected from the
> Mapp sensor. I also found that someone had installed the wrong O2 sensor
> and it was replaced with the correct one. The radiator has been flushed a
> couple of times and now seems clean. There is a slight leak in the
radiator
> between the converter and muffler. It seems to idle fine but has a
> sluggish pickup in engine RPM. Also backfires once in a while and wants
to
> get hot climbing even a small hill. Timing seems to be slightly higher
than
> 12 BTDC. Have not checked the fuel filter as of yet. I cannot seem to
find
> any information as to the correct hose connections that had to be removed
> when doing the valve job. All seem to be correct but cannot tell for
sure.
> Can you advise any other areas to check and perhaps point me to a site
where
> the hose diagram might be found? Thanks Don Smith
>
>
>
>
>
> ---
> Outgoing mail is certified Virus Free.
> Checked by AVG anti-virus system (http://www.grisoft.com).
> Version: 6.0.735 / Virus Database: 489 - Release Date: 8/11/04
>
>
---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.735 / Virus Database: 489 - Release Date: 8/12/04
overheating. Also seems to not getting full power under load. It Bogs down
going up a hill and seems to have problems during the lower range of the
Rpms. The Fan clutch seems to be fine. Has the same stiffness in it when
hot as when cold. I did notice that the water seemed to flow into the
radiator faster than out when revving up the engine a bit. It came up thru
the cap every time I increased the engine's Rpms It is a one row radiator
but looks real clean inside and a small wire easily passes thru the tubes I
can get to under the cap area. Tried to ask the Jeep Creep for help but so
far he has not responded. Any help would be appreciated. Thanks Don
"Don Smith" <desmith@innercite.com> wrote in message
news:10hs8sgt6ct7s01@corp.supernews.com...
> Good evening,
> I have a 1986 Jeep Cherokee Pioneer with a 2.46L 4-150 engine with an
> overheating problem. I just purchased it as a basket case and am trying
to
> get it back on the road again. I found that there were two bad valves in
> the number two cylinder. The intake valve was burned through with a large
> grove across the face. The exhaust valve had gotten so hot that it had
> Cupped and sat too low in the seat. The head had a complete professional
> valve job and was shaved slightly to ensure it was not warped. After it
was
> installed the engine ran rich and I found a hose was disconnected from the
> Mapp sensor. I also found that someone had installed the wrong O2 sensor
> and it was replaced with the correct one. The radiator has been flushed a
> couple of times and now seems clean. There is a slight leak in the
radiator
> between the converter and muffler. It seems to idle fine but has a
> sluggish pickup in engine RPM. Also backfires once in a while and wants
to
> get hot climbing even a small hill. Timing seems to be slightly higher
than
> 12 BTDC. Have not checked the fuel filter as of yet. I cannot seem to
find
> any information as to the correct hose connections that had to be removed
> when doing the valve job. All seem to be correct but cannot tell for
sure.
> Can you advise any other areas to check and perhaps point me to a site
where
> the hose diagram might be found? Thanks Don Smith
>
>
>
>
>
> ---
> Outgoing mail is certified Virus Free.
> Checked by AVG anti-virus system (http://www.grisoft.com).
> Version: 6.0.735 / Virus Database: 489 - Release Date: 8/11/04
>
>
---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
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08-15-2004, 06:01 PM
#13
Guest
Posts: n/a
Re: 86 Cherokee overheating problem
Thank you JoBo and Mike for your input. Still working on the problem of
overheating. Also seems to not getting full power under load. It Bogs down
going up a hill and seems to have problems during the lower range of the
Rpms. The Fan clutch seems to be fine. Has the same stiffness in it when
hot as when cold. I did notice that the water seemed to flow into the
radiator faster than out when revving up the engine a bit. It came up thru
the cap every time I increased the engine's Rpms It is a one row radiator
but looks real clean inside and a small wire easily passes thru the tubes I
can get to under the cap area. Tried to ask the Jeep Creep for help but so
far he has not responded. Any help would be appreciated. Thanks Don
"Don Smith" <desmith@innercite.com> wrote in message
news:10hs8sgt6ct7s01@corp.supernews.com...
> Good evening,
> I have a 1986 Jeep Cherokee Pioneer with a 2.46L 4-150 engine with an
> overheating problem. I just purchased it as a basket case and am trying
to
> get it back on the road again. I found that there were two bad valves in
> the number two cylinder. The intake valve was burned through with a large
> grove across the face. The exhaust valve had gotten so hot that it had
> Cupped and sat too low in the seat. The head had a complete professional
> valve job and was shaved slightly to ensure it was not warped. After it
was
> installed the engine ran rich and I found a hose was disconnected from the
> Mapp sensor. I also found that someone had installed the wrong O2 sensor
> and it was replaced with the correct one. The radiator has been flushed a
> couple of times and now seems clean. There is a slight leak in the
radiator
> between the converter and muffler. It seems to idle fine but has a
> sluggish pickup in engine RPM. Also backfires once in a while and wants
to
> get hot climbing even a small hill. Timing seems to be slightly higher
than
> 12 BTDC. Have not checked the fuel filter as of yet. I cannot seem to
find
> any information as to the correct hose connections that had to be removed
> when doing the valve job. All seem to be correct but cannot tell for
sure.
> Can you advise any other areas to check and perhaps point me to a site
where
> the hose diagram might be found? Thanks Don Smith
>
>
>
>
>
> ---
> Outgoing mail is certified Virus Free.
> Checked by AVG anti-virus system (http://www.grisoft.com).
> Version: 6.0.735 / Virus Database: 489 - Release Date: 8/11/04
>
>
---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.735 / Virus Database: 489 - Release Date: 8/12/04
overheating. Also seems to not getting full power under load. It Bogs down
going up a hill and seems to have problems during the lower range of the
Rpms. The Fan clutch seems to be fine. Has the same stiffness in it when
hot as when cold. I did notice that the water seemed to flow into the
radiator faster than out when revving up the engine a bit. It came up thru
the cap every time I increased the engine's Rpms It is a one row radiator
but looks real clean inside and a small wire easily passes thru the tubes I
can get to under the cap area. Tried to ask the Jeep Creep for help but so
far he has not responded. Any help would be appreciated. Thanks Don
"Don Smith" <desmith@innercite.com> wrote in message
news:10hs8sgt6ct7s01@corp.supernews.com...
> Good evening,
> I have a 1986 Jeep Cherokee Pioneer with a 2.46L 4-150 engine with an
> overheating problem. I just purchased it as a basket case and am trying
to
> get it back on the road again. I found that there were two bad valves in
> the number two cylinder. The intake valve was burned through with a large
> grove across the face. The exhaust valve had gotten so hot that it had
> Cupped and sat too low in the seat. The head had a complete professional
> valve job and was shaved slightly to ensure it was not warped. After it
was
> installed the engine ran rich and I found a hose was disconnected from the
> Mapp sensor. I also found that someone had installed the wrong O2 sensor
> and it was replaced with the correct one. The radiator has been flushed a
> couple of times and now seems clean. There is a slight leak in the
radiator
> between the converter and muffler. It seems to idle fine but has a
> sluggish pickup in engine RPM. Also backfires once in a while and wants
to
> get hot climbing even a small hill. Timing seems to be slightly higher
than
> 12 BTDC. Have not checked the fuel filter as of yet. I cannot seem to
find
> any information as to the correct hose connections that had to be removed
> when doing the valve job. All seem to be correct but cannot tell for
sure.
> Can you advise any other areas to check and perhaps point me to a site
where
> the hose diagram might be found? Thanks Don Smith
>
>
>
>
>
> ---
> Outgoing mail is certified Virus Free.
> Checked by AVG anti-virus system (http://www.grisoft.com).
> Version: 6.0.735 / Virus Database: 489 - Release Date: 8/11/04
>
>
---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.735 / Virus Database: 489 - Release Date: 8/12/04
08-15-2004, 08:26 PM
#14
Guest
Posts: n/a
Re: 86 Cherokee overheating problem
The fan clutch should be 'radically' different when hot and cold.
Really radically!
Cold it is supposed to free wheel, hot it locks up and stops instantly
when shut down.
If it acts the same, it is toast.
Mike
Don Smith wrote:
>
> Thank you JoBo and Mike for your input. Still working on the problem of
> overheating. Also seems to not getting full power under load. It Bogs down
> going up a hill and seems to have problems during the lower range of the
> Rpms. The Fan clutch seems to be fine. Has the same stiffness in it when
> hot as when cold. I did notice that the water seemed to flow into the
> radiator faster than out when revving up the engine a bit. It came up thru
> the cap every time I increased the engine's Rpms It is a one row radiator
> but looks real clean inside and a small wire easily passes thru the tubes I
> can get to under the cap area. Tried to ask the Jeep Creep for help but so
> far he has not responded. Any help would be appreciated. Thanks Don
> "Don Smith" <desmith@innercite.com> wrote in message
> news:10hs8sgt6ct7s01@corp.supernews.com...
> > Good evening,
> > I have a 1986 Jeep Cherokee Pioneer with a 2.46L 4-150 engine with an
> > overheating problem. I just purchased it as a basket case and am trying
> to
> > get it back on the road again. I found that there were two bad valves in
> > the number two cylinder. The intake valve was burned through with a large
> > grove across the face. The exhaust valve had gotten so hot that it had
> > Cupped and sat too low in the seat. The head had a complete professional
> > valve job and was shaved slightly to ensure it was not warped. After it
> was
> > installed the engine ran rich and I found a hose was disconnected from the
> > Mapp sensor. I also found that someone had installed the wrong O2 sensor
> > and it was replaced with the correct one. The radiator has been flushed a
> > couple of times and now seems clean. There is a slight leak in the
> radiator
> > between the converter and muffler. It seems to idle fine but has a
> > sluggish pickup in engine RPM. Also backfires once in a while and wants
> to
> > get hot climbing even a small hill. Timing seems to be slightly higher
> than
> > 12 BTDC. Have not checked the fuel filter as of yet. I cannot seem to
> find
> > any information as to the correct hose connections that had to be removed
> > when doing the valve job. All seem to be correct but cannot tell for
> sure.
> > Can you advise any other areas to check and perhaps point me to a site
> where
> > the hose diagram might be found? Thanks Don Smith
> >
> >
> >
> >
> >
> > ---
> > Outgoing mail is certified Virus Free.
> > Checked by AVG anti-virus system (http://www.grisoft.com).
> > Version: 6.0.735 / Virus Database: 489 - Release Date: 8/11/04
> >
> >
>
> ---
> Outgoing mail is certified Virus Free.
> Checked by AVG anti-virus system (http://www.grisoft.com).
> Version: 6.0.735 / Virus Database: 489 - Release Date: 8/12/04
Really radically!
Cold it is supposed to free wheel, hot it locks up and stops instantly
when shut down.
If it acts the same, it is toast.
Mike
Don Smith wrote:
>
> Thank you JoBo and Mike for your input. Still working on the problem of
> overheating. Also seems to not getting full power under load. It Bogs down
> going up a hill and seems to have problems during the lower range of the
> Rpms. The Fan clutch seems to be fine. Has the same stiffness in it when
> hot as when cold. I did notice that the water seemed to flow into the
> radiator faster than out when revving up the engine a bit. It came up thru
> the cap every time I increased the engine's Rpms It is a one row radiator
> but looks real clean inside and a small wire easily passes thru the tubes I
> can get to under the cap area. Tried to ask the Jeep Creep for help but so
> far he has not responded. Any help would be appreciated. Thanks Don
> "Don Smith" <desmith@innercite.com> wrote in message
> news:10hs8sgt6ct7s01@corp.supernews.com...
> > Good evening,
> > I have a 1986 Jeep Cherokee Pioneer with a 2.46L 4-150 engine with an
> > overheating problem. I just purchased it as a basket case and am trying
> to
> > get it back on the road again. I found that there were two bad valves in
> > the number two cylinder. The intake valve was burned through with a large
> > grove across the face. The exhaust valve had gotten so hot that it had
> > Cupped and sat too low in the seat. The head had a complete professional
> > valve job and was shaved slightly to ensure it was not warped. After it
> was
> > installed the engine ran rich and I found a hose was disconnected from the
> > Mapp sensor. I also found that someone had installed the wrong O2 sensor
> > and it was replaced with the correct one. The radiator has been flushed a
> > couple of times and now seems clean. There is a slight leak in the
> radiator
> > between the converter and muffler. It seems to idle fine but has a
> > sluggish pickup in engine RPM. Also backfires once in a while and wants
> to
> > get hot climbing even a small hill. Timing seems to be slightly higher
> than
> > 12 BTDC. Have not checked the fuel filter as of yet. I cannot seem to
> find
> > any information as to the correct hose connections that had to be removed
> > when doing the valve job. All seem to be correct but cannot tell for
> sure.
> > Can you advise any other areas to check and perhaps point me to a site
> where
> > the hose diagram might be found? Thanks Don Smith
> >
> >
> >
> >
> >
> > ---
> > Outgoing mail is certified Virus Free.
> > Checked by AVG anti-virus system (http://www.grisoft.com).
> > Version: 6.0.735 / Virus Database: 489 - Release Date: 8/11/04
> >
> >
>
> ---
> Outgoing mail is certified Virus Free.
> Checked by AVG anti-virus system (http://www.grisoft.com).
> Version: 6.0.735 / Virus Database: 489 - Release Date: 8/12/04
08-15-2004, 08:26 PM
#15
Guest
Posts: n/a
Re: 86 Cherokee overheating problem
The fan clutch should be 'radically' different when hot and cold.
Really radically!
Cold it is supposed to free wheel, hot it locks up and stops instantly
when shut down.
If it acts the same, it is toast.
Mike
Don Smith wrote:
>
> Thank you JoBo and Mike for your input. Still working on the problem of
> overheating. Also seems to not getting full power under load. It Bogs down
> going up a hill and seems to have problems during the lower range of the
> Rpms. The Fan clutch seems to be fine. Has the same stiffness in it when
> hot as when cold. I did notice that the water seemed to flow into the
> radiator faster than out when revving up the engine a bit. It came up thru
> the cap every time I increased the engine's Rpms It is a one row radiator
> but looks real clean inside and a small wire easily passes thru the tubes I
> can get to under the cap area. Tried to ask the Jeep Creep for help but so
> far he has not responded. Any help would be appreciated. Thanks Don
> "Don Smith" <desmith@innercite.com> wrote in message
> news:10hs8sgt6ct7s01@corp.supernews.com...
> > Good evening,
> > I have a 1986 Jeep Cherokee Pioneer with a 2.46L 4-150 engine with an
> > overheating problem. I just purchased it as a basket case and am trying
> to
> > get it back on the road again. I found that there were two bad valves in
> > the number two cylinder. The intake valve was burned through with a large
> > grove across the face. The exhaust valve had gotten so hot that it had
> > Cupped and sat too low in the seat. The head had a complete professional
> > valve job and was shaved slightly to ensure it was not warped. After it
> was
> > installed the engine ran rich and I found a hose was disconnected from the
> > Mapp sensor. I also found that someone had installed the wrong O2 sensor
> > and it was replaced with the correct one. The radiator has been flushed a
> > couple of times and now seems clean. There is a slight leak in the
> radiator
> > between the converter and muffler. It seems to idle fine but has a
> > sluggish pickup in engine RPM. Also backfires once in a while and wants
> to
> > get hot climbing even a small hill. Timing seems to be slightly higher
> than
> > 12 BTDC. Have not checked the fuel filter as of yet. I cannot seem to
> find
> > any information as to the correct hose connections that had to be removed
> > when doing the valve job. All seem to be correct but cannot tell for
> sure.
> > Can you advise any other areas to check and perhaps point me to a site
> where
> > the hose diagram might be found? Thanks Don Smith
> >
> >
> >
> >
> >
> > ---
> > Outgoing mail is certified Virus Free.
> > Checked by AVG anti-virus system (http://www.grisoft.com).
> > Version: 6.0.735 / Virus Database: 489 - Release Date: 8/11/04
> >
> >
>
> ---
> Outgoing mail is certified Virus Free.
> Checked by AVG anti-virus system (http://www.grisoft.com).
> Version: 6.0.735 / Virus Database: 489 - Release Date: 8/12/04
Really radically!
Cold it is supposed to free wheel, hot it locks up and stops instantly
when shut down.
If it acts the same, it is toast.
Mike
Don Smith wrote:
>
> Thank you JoBo and Mike for your input. Still working on the problem of
> overheating. Also seems to not getting full power under load. It Bogs down
> going up a hill and seems to have problems during the lower range of the
> Rpms. The Fan clutch seems to be fine. Has the same stiffness in it when
> hot as when cold. I did notice that the water seemed to flow into the
> radiator faster than out when revving up the engine a bit. It came up thru
> the cap every time I increased the engine's Rpms It is a one row radiator
> but looks real clean inside and a small wire easily passes thru the tubes I
> can get to under the cap area. Tried to ask the Jeep Creep for help but so
> far he has not responded. Any help would be appreciated. Thanks Don
> "Don Smith" <desmith@innercite.com> wrote in message
> news:10hs8sgt6ct7s01@corp.supernews.com...
> > Good evening,
> > I have a 1986 Jeep Cherokee Pioneer with a 2.46L 4-150 engine with an
> > overheating problem. I just purchased it as a basket case and am trying
> to
> > get it back on the road again. I found that there were two bad valves in
> > the number two cylinder. The intake valve was burned through with a large
> > grove across the face. The exhaust valve had gotten so hot that it had
> > Cupped and sat too low in the seat. The head had a complete professional
> > valve job and was shaved slightly to ensure it was not warped. After it
> was
> > installed the engine ran rich and I found a hose was disconnected from the
> > Mapp sensor. I also found that someone had installed the wrong O2 sensor
> > and it was replaced with the correct one. The radiator has been flushed a
> > couple of times and now seems clean. There is a slight leak in the
> radiator
> > between the converter and muffler. It seems to idle fine but has a
> > sluggish pickup in engine RPM. Also backfires once in a while and wants
> to
> > get hot climbing even a small hill. Timing seems to be slightly higher
> than
> > 12 BTDC. Have not checked the fuel filter as of yet. I cannot seem to
> find
> > any information as to the correct hose connections that had to be removed
> > when doing the valve job. All seem to be correct but cannot tell for
> sure.
> > Can you advise any other areas to check and perhaps point me to a site
> where
> > the hose diagram might be found? Thanks Don Smith
> >
> >
> >
> >
> >
> > ---
> > Outgoing mail is certified Virus Free.
> > Checked by AVG anti-virus system (http://www.grisoft.com).
> > Version: 6.0.735 / Virus Database: 489 - Release Date: 8/11/04
> >
> >
>
> ---
> Outgoing mail is certified Virus Free.
> Checked by AVG anti-virus system (http://www.grisoft.com).
> Version: 6.0.735 / Virus Database: 489 - Release Date: 8/12/04
08-15-2004, 08:26 PM
#16
Guest
Posts: n/a
Re: 86 Cherokee overheating problem
The fan clutch should be 'radically' different when hot and cold.
Really radically!
Cold it is supposed to free wheel, hot it locks up and stops instantly
when shut down.
If it acts the same, it is toast.
Mike
Don Smith wrote:
>
> Thank you JoBo and Mike for your input. Still working on the problem of
> overheating. Also seems to not getting full power under load. It Bogs down
> going up a hill and seems to have problems during the lower range of the
> Rpms. The Fan clutch seems to be fine. Has the same stiffness in it when
> hot as when cold. I did notice that the water seemed to flow into the
> radiator faster than out when revving up the engine a bit. It came up thru
> the cap every time I increased the engine's Rpms It is a one row radiator
> but looks real clean inside and a small wire easily passes thru the tubes I
> can get to under the cap area. Tried to ask the Jeep Creep for help but so
> far he has not responded. Any help would be appreciated. Thanks Don
> "Don Smith" <desmith@innercite.com> wrote in message
> news:10hs8sgt6ct7s01@corp.supernews.com...
> > Good evening,
> > I have a 1986 Jeep Cherokee Pioneer with a 2.46L 4-150 engine with an
> > overheating problem. I just purchased it as a basket case and am trying
> to
> > get it back on the road again. I found that there were two bad valves in
> > the number two cylinder. The intake valve was burned through with a large
> > grove across the face. The exhaust valve had gotten so hot that it had
> > Cupped and sat too low in the seat. The head had a complete professional
> > valve job and was shaved slightly to ensure it was not warped. After it
> was
> > installed the engine ran rich and I found a hose was disconnected from the
> > Mapp sensor. I also found that someone had installed the wrong O2 sensor
> > and it was replaced with the correct one. The radiator has been flushed a
> > couple of times and now seems clean. There is a slight leak in the
> radiator
> > between the converter and muffler. It seems to idle fine but has a
> > sluggish pickup in engine RPM. Also backfires once in a while and wants
> to
> > get hot climbing even a small hill. Timing seems to be slightly higher
> than
> > 12 BTDC. Have not checked the fuel filter as of yet. I cannot seem to
> find
> > any information as to the correct hose connections that had to be removed
> > when doing the valve job. All seem to be correct but cannot tell for
> sure.
> > Can you advise any other areas to check and perhaps point me to a site
> where
> > the hose diagram might be found? Thanks Don Smith
> >
> >
> >
> >
> >
> > ---
> > Outgoing mail is certified Virus Free.
> > Checked by AVG anti-virus system (http://www.grisoft.com).
> > Version: 6.0.735 / Virus Database: 489 - Release Date: 8/11/04
> >
> >
>
> ---
> Outgoing mail is certified Virus Free.
> Checked by AVG anti-virus system (http://www.grisoft.com).
> Version: 6.0.735 / Virus Database: 489 - Release Date: 8/12/04
Really radically!
Cold it is supposed to free wheel, hot it locks up and stops instantly
when shut down.
If it acts the same, it is toast.
Mike
Don Smith wrote:
>
> Thank you JoBo and Mike for your input. Still working on the problem of
> overheating. Also seems to not getting full power under load. It Bogs down
> going up a hill and seems to have problems during the lower range of the
> Rpms. The Fan clutch seems to be fine. Has the same stiffness in it when
> hot as when cold. I did notice that the water seemed to flow into the
> radiator faster than out when revving up the engine a bit. It came up thru
> the cap every time I increased the engine's Rpms It is a one row radiator
> but looks real clean inside and a small wire easily passes thru the tubes I
> can get to under the cap area. Tried to ask the Jeep Creep for help but so
> far he has not responded. Any help would be appreciated. Thanks Don
> "Don Smith" <desmith@innercite.com> wrote in message
> news:10hs8sgt6ct7s01@corp.supernews.com...
> > Good evening,
> > I have a 1986 Jeep Cherokee Pioneer with a 2.46L 4-150 engine with an
> > overheating problem. I just purchased it as a basket case and am trying
> to
> > get it back on the road again. I found that there were two bad valves in
> > the number two cylinder. The intake valve was burned through with a large
> > grove across the face. The exhaust valve had gotten so hot that it had
> > Cupped and sat too low in the seat. The head had a complete professional
> > valve job and was shaved slightly to ensure it was not warped. After it
> was
> > installed the engine ran rich and I found a hose was disconnected from the
> > Mapp sensor. I also found that someone had installed the wrong O2 sensor
> > and it was replaced with the correct one. The radiator has been flushed a
> > couple of times and now seems clean. There is a slight leak in the
> radiator
> > between the converter and muffler. It seems to idle fine but has a
> > sluggish pickup in engine RPM. Also backfires once in a while and wants
> to
> > get hot climbing even a small hill. Timing seems to be slightly higher
> than
> > 12 BTDC. Have not checked the fuel filter as of yet. I cannot seem to
> find
> > any information as to the correct hose connections that had to be removed
> > when doing the valve job. All seem to be correct but cannot tell for
> sure.
> > Can you advise any other areas to check and perhaps point me to a site
> where
> > the hose diagram might be found? Thanks Don Smith
> >
> >
> >
> >
> >
> > ---
> > Outgoing mail is certified Virus Free.
> > Checked by AVG anti-virus system (http://www.grisoft.com).
> > Version: 6.0.735 / Virus Database: 489 - Release Date: 8/11/04
> >
> >
>
> ---
> Outgoing mail is certified Virus Free.
> Checked by AVG anti-virus system (http://www.grisoft.com).
> Version: 6.0.735 / Virus Database: 489 - Release Date: 8/12/04
08-15-2004, 08:26 PM
#17
Guest
Posts: n/a
Re: 86 Cherokee overheating problem
The fan clutch should be 'radically' different when hot and cold.
Really radically!
Cold it is supposed to free wheel, hot it locks up and stops instantly
when shut down.
If it acts the same, it is toast.
Mike
Don Smith wrote:
>
> Thank you JoBo and Mike for your input. Still working on the problem of
> overheating. Also seems to not getting full power under load. It Bogs down
> going up a hill and seems to have problems during the lower range of the
> Rpms. The Fan clutch seems to be fine. Has the same stiffness in it when
> hot as when cold. I did notice that the water seemed to flow into the
> radiator faster than out when revving up the engine a bit. It came up thru
> the cap every time I increased the engine's Rpms It is a one row radiator
> but looks real clean inside and a small wire easily passes thru the tubes I
> can get to under the cap area. Tried to ask the Jeep Creep for help but so
> far he has not responded. Any help would be appreciated. Thanks Don
> "Don Smith" <desmith@innercite.com> wrote in message
> news:10hs8sgt6ct7s01@corp.supernews.com...
> > Good evening,
> > I have a 1986 Jeep Cherokee Pioneer with a 2.46L 4-150 engine with an
> > overheating problem. I just purchased it as a basket case and am trying
> to
> > get it back on the road again. I found that there were two bad valves in
> > the number two cylinder. The intake valve was burned through with a large
> > grove across the face. The exhaust valve had gotten so hot that it had
> > Cupped and sat too low in the seat. The head had a complete professional
> > valve job and was shaved slightly to ensure it was not warped. After it
> was
> > installed the engine ran rich and I found a hose was disconnected from the
> > Mapp sensor. I also found that someone had installed the wrong O2 sensor
> > and it was replaced with the correct one. The radiator has been flushed a
> > couple of times and now seems clean. There is a slight leak in the
> radiator
> > between the converter and muffler. It seems to idle fine but has a
> > sluggish pickup in engine RPM. Also backfires once in a while and wants
> to
> > get hot climbing even a small hill. Timing seems to be slightly higher
> than
> > 12 BTDC. Have not checked the fuel filter as of yet. I cannot seem to
> find
> > any information as to the correct hose connections that had to be removed
> > when doing the valve job. All seem to be correct but cannot tell for
> sure.
> > Can you advise any other areas to check and perhaps point me to a site
> where
> > the hose diagram might be found? Thanks Don Smith
> >
> >
> >
> >
> >
> > ---
> > Outgoing mail is certified Virus Free.
> > Checked by AVG anti-virus system (http://www.grisoft.com).
> > Version: 6.0.735 / Virus Database: 489 - Release Date: 8/11/04
> >
> >
>
> ---
> Outgoing mail is certified Virus Free.
> Checked by AVG anti-virus system (http://www.grisoft.com).
> Version: 6.0.735 / Virus Database: 489 - Release Date: 8/12/04
Really radically!
Cold it is supposed to free wheel, hot it locks up and stops instantly
when shut down.
If it acts the same, it is toast.
Mike
Don Smith wrote:
>
> Thank you JoBo and Mike for your input. Still working on the problem of
> overheating. Also seems to not getting full power under load. It Bogs down
> going up a hill and seems to have problems during the lower range of the
> Rpms. The Fan clutch seems to be fine. Has the same stiffness in it when
> hot as when cold. I did notice that the water seemed to flow into the
> radiator faster than out when revving up the engine a bit. It came up thru
> the cap every time I increased the engine's Rpms It is a one row radiator
> but looks real clean inside and a small wire easily passes thru the tubes I
> can get to under the cap area. Tried to ask the Jeep Creep for help but so
> far he has not responded. Any help would be appreciated. Thanks Don
> "Don Smith" <desmith@innercite.com> wrote in message
> news:10hs8sgt6ct7s01@corp.supernews.com...
> > Good evening,
> > I have a 1986 Jeep Cherokee Pioneer with a 2.46L 4-150 engine with an
> > overheating problem. I just purchased it as a basket case and am trying
> to
> > get it back on the road again. I found that there were two bad valves in
> > the number two cylinder. The intake valve was burned through with a large
> > grove across the face. The exhaust valve had gotten so hot that it had
> > Cupped and sat too low in the seat. The head had a complete professional
> > valve job and was shaved slightly to ensure it was not warped. After it
> was
> > installed the engine ran rich and I found a hose was disconnected from the
> > Mapp sensor. I also found that someone had installed the wrong O2 sensor
> > and it was replaced with the correct one. The radiator has been flushed a
> > couple of times and now seems clean. There is a slight leak in the
> radiator
> > between the converter and muffler. It seems to idle fine but has a
> > sluggish pickup in engine RPM. Also backfires once in a while and wants
> to
> > get hot climbing even a small hill. Timing seems to be slightly higher
> than
> > 12 BTDC. Have not checked the fuel filter as of yet. I cannot seem to
> find
> > any information as to the correct hose connections that had to be removed
> > when doing the valve job. All seem to be correct but cannot tell for
> sure.
> > Can you advise any other areas to check and perhaps point me to a site
> where
> > the hose diagram might be found? Thanks Don Smith
> >
> >
> >
> >
> >
> > ---
> > Outgoing mail is certified Virus Free.
> > Checked by AVG anti-virus system (http://www.grisoft.com).
> > Version: 6.0.735 / Virus Database: 489 - Release Date: 8/11/04
> >
> >
>
> ---
> Outgoing mail is certified Virus Free.
> Checked by AVG anti-virus system (http://www.grisoft.com).
> Version: 6.0.735 / Virus Database: 489 - Release Date: 8/12/04
08-16-2004, 01:55 AM
#18
Guest
Posts: n/a
Re: 86 Cherokee overheating problem
You're giving a pretty fair description of a plugged radiator or a
collapsed lower hose - can't pull water out as fast as it goes in. I
looked at the Commanche manual for the 86 and can't tell - did the
4-banger have that wonderful closed system they stuck on the 4.0 L 6
in 87? If so, then there are a few other 'simple' things to look at,
but from what you describe it doesn't sound like the closed system.
On Sun, 15 Aug 2004 22:01:23 UTC "Don Smith" <desmith@innercite.com>
wrote:
> Thank you JoBo and Mike for your input. Still working on the problem of
> overheating. Also seems to not getting full power under load. It Bogs down
> going up a hill and seems to have problems during the lower range of the
> Rpms. The Fan clutch seems to be fine. Has the same stiffness in it when
> hot as when cold. I did notice that the water seemed to flow into the
> radiator faster than out when revving up the engine a bit. It came up thru
> the cap every time I increased the engine's Rpms It is a one row radiator
> but looks real clean inside and a small wire easily passes thru the tubes I
> can get to under the cap area. Tried to ask the Jeep Creep for help but so
> far he has not responded. Any help would be appreciated. Thanks Don
> "Don Smith" <desmith@innercite.com> wrote in message
> news:10hs8sgt6ct7s01@corp.supernews.com...
> > Good evening,
> > I have a 1986 Jeep Cherokee Pioneer with a 2.46L 4-150 engine with an
> > overheating problem. I just purchased it as a basket case and am trying
> to
> > get it back on the road again. I found that there were two bad valves in
> > the number two cylinder. The intake valve was burned through with a large
> > grove across the face. The exhaust valve had gotten so hot that it had
> > Cupped and sat too low in the seat. The head had a complete professional
> > valve job and was shaved slightly to ensure it was not warped. After it
> was
> > installed the engine ran rich and I found a hose was disconnected from the
> > Mapp sensor. I also found that someone had installed the wrong O2 sensor
> > and it was replaced with the correct one. The radiator has been flushed a
> > couple of times and now seems clean. There is a slight leak in the
> radiator
> > between the converter and muffler. It seems to idle fine but has a
> > sluggish pickup in engine RPM. Also backfires once in a while and wants
> to
> > get hot climbing even a small hill. Timing seems to be slightly higher
> than
> > 12 BTDC. Have not checked the fuel filter as of yet. I cannot seem to
> find
> > any information as to the correct hose connections that had to be removed
> > when doing the valve job. All seem to be correct but cannot tell for
> sure.
> > Can you advise any other areas to check and perhaps point me to a site
> where
> > the hose diagram might be found? Thanks Don Smith
> >
> >
> >
> >
> >
> > ---
> > Outgoing mail is certified Virus Free.
> > Checked by AVG anti-virus system (http://www.grisoft.com).
> > Version: 6.0.735 / Virus Database: 489 - Release Date: 8/11/04
> >
> >
>
>
> ---
> Outgoing mail is certified Virus Free.
> Checked by AVG anti-virus system (http://www.grisoft.com).
> Version: 6.0.735 / Virus Database: 489 - Release Date: 8/12/04
>
>
--
Will Honea
collapsed lower hose - can't pull water out as fast as it goes in. I
looked at the Commanche manual for the 86 and can't tell - did the
4-banger have that wonderful closed system they stuck on the 4.0 L 6
in 87? If so, then there are a few other 'simple' things to look at,
but from what you describe it doesn't sound like the closed system.
On Sun, 15 Aug 2004 22:01:23 UTC "Don Smith" <desmith@innercite.com>
wrote:
> Thank you JoBo and Mike for your input. Still working on the problem of
> overheating. Also seems to not getting full power under load. It Bogs down
> going up a hill and seems to have problems during the lower range of the
> Rpms. The Fan clutch seems to be fine. Has the same stiffness in it when
> hot as when cold. I did notice that the water seemed to flow into the
> radiator faster than out when revving up the engine a bit. It came up thru
> the cap every time I increased the engine's Rpms It is a one row radiator
> but looks real clean inside and a small wire easily passes thru the tubes I
> can get to under the cap area. Tried to ask the Jeep Creep for help but so
> far he has not responded. Any help would be appreciated. Thanks Don
> "Don Smith" <desmith@innercite.com> wrote in message
> news:10hs8sgt6ct7s01@corp.supernews.com...
> > Good evening,
> > I have a 1986 Jeep Cherokee Pioneer with a 2.46L 4-150 engine with an
> > overheating problem. I just purchased it as a basket case and am trying
> to
> > get it back on the road again. I found that there were two bad valves in
> > the number two cylinder. The intake valve was burned through with a large
> > grove across the face. The exhaust valve had gotten so hot that it had
> > Cupped and sat too low in the seat. The head had a complete professional
> > valve job and was shaved slightly to ensure it was not warped. After it
> was
> > installed the engine ran rich and I found a hose was disconnected from the
> > Mapp sensor. I also found that someone had installed the wrong O2 sensor
> > and it was replaced with the correct one. The radiator has been flushed a
> > couple of times and now seems clean. There is a slight leak in the
> radiator
> > between the converter and muffler. It seems to idle fine but has a
> > sluggish pickup in engine RPM. Also backfires once in a while and wants
> to
> > get hot climbing even a small hill. Timing seems to be slightly higher
> than
> > 12 BTDC. Have not checked the fuel filter as of yet. I cannot seem to
> find
> > any information as to the correct hose connections that had to be removed
> > when doing the valve job. All seem to be correct but cannot tell for
> sure.
> > Can you advise any other areas to check and perhaps point me to a site
> where
> > the hose diagram might be found? Thanks Don Smith
> >
> >
> >
> >
> >
> > ---
> > Outgoing mail is certified Virus Free.
> > Checked by AVG anti-virus system (http://www.grisoft.com).
> > Version: 6.0.735 / Virus Database: 489 - Release Date: 8/11/04
> >
> >
>
>
> ---
> Outgoing mail is certified Virus Free.
> Checked by AVG anti-virus system (http://www.grisoft.com).
> Version: 6.0.735 / Virus Database: 489 - Release Date: 8/12/04
>
>
--
Will Honea
08-16-2004, 01:55 AM
#19
Guest
Posts: n/a
Re: 86 Cherokee overheating problem
You're giving a pretty fair description of a plugged radiator or a
collapsed lower hose - can't pull water out as fast as it goes in. I
looked at the Commanche manual for the 86 and can't tell - did the
4-banger have that wonderful closed system they stuck on the 4.0 L 6
in 87? If so, then there are a few other 'simple' things to look at,
but from what you describe it doesn't sound like the closed system.
On Sun, 15 Aug 2004 22:01:23 UTC "Don Smith" <desmith@innercite.com>
wrote:
> Thank you JoBo and Mike for your input. Still working on the problem of
> overheating. Also seems to not getting full power under load. It Bogs down
> going up a hill and seems to have problems during the lower range of the
> Rpms. The Fan clutch seems to be fine. Has the same stiffness in it when
> hot as when cold. I did notice that the water seemed to flow into the
> radiator faster than out when revving up the engine a bit. It came up thru
> the cap every time I increased the engine's Rpms It is a one row radiator
> but looks real clean inside and a small wire easily passes thru the tubes I
> can get to under the cap area. Tried to ask the Jeep Creep for help but so
> far he has not responded. Any help would be appreciated. Thanks Don
> "Don Smith" <desmith@innercite.com> wrote in message
> news:10hs8sgt6ct7s01@corp.supernews.com...
> > Good evening,
> > I have a 1986 Jeep Cherokee Pioneer with a 2.46L 4-150 engine with an
> > overheating problem. I just purchased it as a basket case and am trying
> to
> > get it back on the road again. I found that there were two bad valves in
> > the number two cylinder. The intake valve was burned through with a large
> > grove across the face. The exhaust valve had gotten so hot that it had
> > Cupped and sat too low in the seat. The head had a complete professional
> > valve job and was shaved slightly to ensure it was not warped. After it
> was
> > installed the engine ran rich and I found a hose was disconnected from the
> > Mapp sensor. I also found that someone had installed the wrong O2 sensor
> > and it was replaced with the correct one. The radiator has been flushed a
> > couple of times and now seems clean. There is a slight leak in the
> radiator
> > between the converter and muffler. It seems to idle fine but has a
> > sluggish pickup in engine RPM. Also backfires once in a while and wants
> to
> > get hot climbing even a small hill. Timing seems to be slightly higher
> than
> > 12 BTDC. Have not checked the fuel filter as of yet. I cannot seem to
> find
> > any information as to the correct hose connections that had to be removed
> > when doing the valve job. All seem to be correct but cannot tell for
> sure.
> > Can you advise any other areas to check and perhaps point me to a site
> where
> > the hose diagram might be found? Thanks Don Smith
> >
> >
> >
> >
> >
> > ---
> > Outgoing mail is certified Virus Free.
> > Checked by AVG anti-virus system (http://www.grisoft.com).
> > Version: 6.0.735 / Virus Database: 489 - Release Date: 8/11/04
> >
> >
>
>
> ---
> Outgoing mail is certified Virus Free.
> Checked by AVG anti-virus system (http://www.grisoft.com).
> Version: 6.0.735 / Virus Database: 489 - Release Date: 8/12/04
>
>
--
Will Honea
collapsed lower hose - can't pull water out as fast as it goes in. I
looked at the Commanche manual for the 86 and can't tell - did the
4-banger have that wonderful closed system they stuck on the 4.0 L 6
in 87? If so, then there are a few other 'simple' things to look at,
but from what you describe it doesn't sound like the closed system.
On Sun, 15 Aug 2004 22:01:23 UTC "Don Smith" <desmith@innercite.com>
wrote:
> Thank you JoBo and Mike for your input. Still working on the problem of
> overheating. Also seems to not getting full power under load. It Bogs down
> going up a hill and seems to have problems during the lower range of the
> Rpms. The Fan clutch seems to be fine. Has the same stiffness in it when
> hot as when cold. I did notice that the water seemed to flow into the
> radiator faster than out when revving up the engine a bit. It came up thru
> the cap every time I increased the engine's Rpms It is a one row radiator
> but looks real clean inside and a small wire easily passes thru the tubes I
> can get to under the cap area. Tried to ask the Jeep Creep for help but so
> far he has not responded. Any help would be appreciated. Thanks Don
> "Don Smith" <desmith@innercite.com> wrote in message
> news:10hs8sgt6ct7s01@corp.supernews.com...
> > Good evening,
> > I have a 1986 Jeep Cherokee Pioneer with a 2.46L 4-150 engine with an
> > overheating problem. I just purchased it as a basket case and am trying
> to
> > get it back on the road again. I found that there were two bad valves in
> > the number two cylinder. The intake valve was burned through with a large
> > grove across the face. The exhaust valve had gotten so hot that it had
> > Cupped and sat too low in the seat. The head had a complete professional
> > valve job and was shaved slightly to ensure it was not warped. After it
> was
> > installed the engine ran rich and I found a hose was disconnected from the
> > Mapp sensor. I also found that someone had installed the wrong O2 sensor
> > and it was replaced with the correct one. The radiator has been flushed a
> > couple of times and now seems clean. There is a slight leak in the
> radiator
> > between the converter and muffler. It seems to idle fine but has a
> > sluggish pickup in engine RPM. Also backfires once in a while and wants
> to
> > get hot climbing even a small hill. Timing seems to be slightly higher
> than
> > 12 BTDC. Have not checked the fuel filter as of yet. I cannot seem to
> find
> > any information as to the correct hose connections that had to be removed
> > when doing the valve job. All seem to be correct but cannot tell for
> sure.
> > Can you advise any other areas to check and perhaps point me to a site
> where
> > the hose diagram might be found? Thanks Don Smith
> >
> >
> >
> >
> >
> > ---
> > Outgoing mail is certified Virus Free.
> > Checked by AVG anti-virus system (http://www.grisoft.com).
> > Version: 6.0.735 / Virus Database: 489 - Release Date: 8/11/04
> >
> >
>
>
> ---
> Outgoing mail is certified Virus Free.
> Checked by AVG anti-virus system (http://www.grisoft.com).
> Version: 6.0.735 / Virus Database: 489 - Release Date: 8/12/04
>
>
--
Will Honea
08-16-2004, 01:55 AM
#20
Guest
Posts: n/a
Re: 86 Cherokee overheating problem
You're giving a pretty fair description of a plugged radiator or a
collapsed lower hose - can't pull water out as fast as it goes in. I
looked at the Commanche manual for the 86 and can't tell - did the
4-banger have that wonderful closed system they stuck on the 4.0 L 6
in 87? If so, then there are a few other 'simple' things to look at,
but from what you describe it doesn't sound like the closed system.
On Sun, 15 Aug 2004 22:01:23 UTC "Don Smith" <desmith@innercite.com>
wrote:
> Thank you JoBo and Mike for your input. Still working on the problem of
> overheating. Also seems to not getting full power under load. It Bogs down
> going up a hill and seems to have problems during the lower range of the
> Rpms. The Fan clutch seems to be fine. Has the same stiffness in it when
> hot as when cold. I did notice that the water seemed to flow into the
> radiator faster than out when revving up the engine a bit. It came up thru
> the cap every time I increased the engine's Rpms It is a one row radiator
> but looks real clean inside and a small wire easily passes thru the tubes I
> can get to under the cap area. Tried to ask the Jeep Creep for help but so
> far he has not responded. Any help would be appreciated. Thanks Don
> "Don Smith" <desmith@innercite.com> wrote in message
> news:10hs8sgt6ct7s01@corp.supernews.com...
> > Good evening,
> > I have a 1986 Jeep Cherokee Pioneer with a 2.46L 4-150 engine with an
> > overheating problem. I just purchased it as a basket case and am trying
> to
> > get it back on the road again. I found that there were two bad valves in
> > the number two cylinder. The intake valve was burned through with a large
> > grove across the face. The exhaust valve had gotten so hot that it had
> > Cupped and sat too low in the seat. The head had a complete professional
> > valve job and was shaved slightly to ensure it was not warped. After it
> was
> > installed the engine ran rich and I found a hose was disconnected from the
> > Mapp sensor. I also found that someone had installed the wrong O2 sensor
> > and it was replaced with the correct one. The radiator has been flushed a
> > couple of times and now seems clean. There is a slight leak in the
> radiator
> > between the converter and muffler. It seems to idle fine but has a
> > sluggish pickup in engine RPM. Also backfires once in a while and wants
> to
> > get hot climbing even a small hill. Timing seems to be slightly higher
> than
> > 12 BTDC. Have not checked the fuel filter as of yet. I cannot seem to
> find
> > any information as to the correct hose connections that had to be removed
> > when doing the valve job. All seem to be correct but cannot tell for
> sure.
> > Can you advise any other areas to check and perhaps point me to a site
> where
> > the hose diagram might be found? Thanks Don Smith
> >
> >
> >
> >
> >
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Will Honea
collapsed lower hose - can't pull water out as fast as it goes in. I
looked at the Commanche manual for the 86 and can't tell - did the
4-banger have that wonderful closed system they stuck on the 4.0 L 6
in 87? If so, then there are a few other 'simple' things to look at,
but from what you describe it doesn't sound like the closed system.
On Sun, 15 Aug 2004 22:01:23 UTC "Don Smith" <desmith@innercite.com>
wrote:
> Thank you JoBo and Mike for your input. Still working on the problem of
> overheating. Also seems to not getting full power under load. It Bogs down
> going up a hill and seems to have problems during the lower range of the
> Rpms. The Fan clutch seems to be fine. Has the same stiffness in it when
> hot as when cold. I did notice that the water seemed to flow into the
> radiator faster than out when revving up the engine a bit. It came up thru
> the cap every time I increased the engine's Rpms It is a one row radiator
> but looks real clean inside and a small wire easily passes thru the tubes I
> can get to under the cap area. Tried to ask the Jeep Creep for help but so
> far he has not responded. Any help would be appreciated. Thanks Don
> "Don Smith" <desmith@innercite.com> wrote in message
> news:10hs8sgt6ct7s01@corp.supernews.com...
> > Good evening,
> > I have a 1986 Jeep Cherokee Pioneer with a 2.46L 4-150 engine with an
> > overheating problem. I just purchased it as a basket case and am trying
> to
> > get it back on the road again. I found that there were two bad valves in
> > the number two cylinder. The intake valve was burned through with a large
> > grove across the face. The exhaust valve had gotten so hot that it had
> > Cupped and sat too low in the seat. The head had a complete professional
> > valve job and was shaved slightly to ensure it was not warped. After it
> was
> > installed the engine ran rich and I found a hose was disconnected from the
> > Mapp sensor. I also found that someone had installed the wrong O2 sensor
> > and it was replaced with the correct one. The radiator has been flushed a
> > couple of times and now seems clean. There is a slight leak in the
> radiator
> > between the converter and muffler. It seems to idle fine but has a
> > sluggish pickup in engine RPM. Also backfires once in a while and wants
> to
> > get hot climbing even a small hill. Timing seems to be slightly higher
> than
> > 12 BTDC. Have not checked the fuel filter as of yet. I cannot seem to
> find
> > any information as to the correct hose connections that had to be removed
> > when doing the valve job. All seem to be correct but cannot tell for
> sure.
> > Can you advise any other areas to check and perhaps point me to a site
> where
> > the hose diagram might be found? Thanks Don Smith
> >
> >
> >
> >
> >
> > ---
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> >
>
>
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>
>
--
Will Honea