Re: Re: Followup-- 2000 JGC V-8 still overheating
 

On Sat, 13 Jan 2007 18:26:03 -0500, Mike Romain <romainm@sympatico.ca>
wrote:

>He could have no real problems with the rad and a wonky sender for the
>gauge.


Maybe but he could check it with a IR thermometer. I do tend to think
it is cooling issue though because I have seen this before. He could
try raise hood starting car up with cap removed and a blanket over
front end to allow it to heat up and not cool coolant and watch for
agressive flow in raditor. Also replace cap and let it get hot at
about a 1000 to 1200 RPM fast idle and see if the clutch fan every
engages and if so at what temps on gage
-----------------
TheSnoMan.com

Re: Followup-- 2000 JGC V-8 still overheating
 

OK
Maybe your coolant system is so efficient that the neck area does not get
super hot. Do you have a factory tow package on this Jeep?
I will ASSuME that the coolant system is FULL and you can't add any more to
the system. Since you can't touch the radiator maybe the coolant in the
neck where you can touch is separated from the coolant inside of the
radiator. Is the upper radiator hose hot or can you touch that?

Yes usually if your engine is working harder it will get hotter. If the
radiator or cooling system is not up to the task then the coolant
temperature will rise.
ALSO if the engine runs lean or has other issues such as a partially clogged
cat then the engine could run hotter too. Has it been tuned or serviced
recently? New filters, air and fuel, spark plugs, etc.?

Did you feel the neck of the radiator right after a good highway trip at 75
mph?
BUT PLEASE DON'T REMOVE THE CAP!!

Running out of ideas without seeing this Jeep. ;-)
good luck!
--
later,
dave AKA vwdoc1
88 XJ 4.0 auto
http://vwdoc1.tripod.com/

"James" <jnipperxxx@nospamfdn.com> wrote in message
news:14mdnWsDQsTCGzTYnZ2dnUVZ_tyinZ2d@comcast.com. ..
> Yes, I took the cap off after the car sat overnight. I ran it for a
> total
> of 45 minutes. Yes, I put my finger in the COOLANT, and yes it was warm
> but no where near hot. The gauge temp was about 205, even after 45 mins
> no
> hotter , and no detectable flow. I assume the coolant in the nec (where
> the cap goes) would be gurggling or bubbling, etc if there was flow. The
> coolant was even, and not disturbed.
>
> I have not checked the spots on the four corners, as you cannot get to
> it.
>
> --james--
>
>

Re: Followup-- 2000 JGC V-8 still overheating
 

OK
Maybe your coolant system is so efficient that the neck area does not get
super hot. Do you have a factory tow package on this Jeep?
I will ASSuME that the coolant system is FULL and you can't add any more to
the system. Since you can't touch the radiator maybe the coolant in the
neck where you can touch is separated from the coolant inside of the
radiator. Is the upper radiator hose hot or can you touch that?

Yes usually if your engine is working harder it will get hotter. If the
radiator or cooling system is not up to the task then the coolant
temperature will rise.
ALSO if the engine runs lean or has other issues such as a partially clogged
cat then the engine could run hotter too. Has it been tuned or serviced
recently? New filters, air and fuel, spark plugs, etc.?

Did you feel the neck of the radiator right after a good highway trip at 75
mph?
BUT PLEASE DON'T REMOVE THE CAP!!

Running out of ideas without seeing this Jeep. ;-)
good luck!
--
later,
dave AKA vwdoc1
88 XJ 4.0 auto
http://vwdoc1.tripod.com/

"James" <jnipperxxx@nospamfdn.com> wrote in message
news:14mdnWsDQsTCGzTYnZ2dnUVZ_tyinZ2d@comcast.com. ..
> Yes, I took the cap off after the car sat overnight. I ran it for a
> total
> of 45 minutes. Yes, I put my finger in the COOLANT, and yes it was warm
> but no where near hot. The gauge temp was about 205, even after 45 mins
> no
> hotter , and no detectable flow. I assume the coolant in the nec (where
> the cap goes) would be gurggling or bubbling, etc if there was flow. The
> coolant was even, and not disturbed.
>
> I have not checked the spots on the four corners, as you cannot get to
> it.
>
> --james--
>
>

Re: Followup-- 2000 JGC V-8 still overheating
 

OK
Maybe your coolant system is so efficient that the neck area does not get
super hot. Do you have a factory tow package on this Jeep?
I will ASSuME that the coolant system is FULL and you can't add any more to
the system. Since you can't touch the radiator maybe the coolant in the
neck where you can touch is separated from the coolant inside of the
radiator. Is the upper radiator hose hot or can you touch that?

Yes usually if your engine is working harder it will get hotter. If the
radiator or cooling system is not up to the task then the coolant
temperature will rise.
ALSO if the engine runs lean or has other issues such as a partially clogged
cat then the engine could run hotter too. Has it been tuned or serviced
recently? New filters, air and fuel, spark plugs, etc.?

Did you feel the neck of the radiator right after a good highway trip at 75
mph?
BUT PLEASE DON'T REMOVE THE CAP!!

Running out of ideas without seeing this Jeep. ;-)
good luck!
--
later,
dave AKA vwdoc1
88 XJ 4.0 auto
http://vwdoc1.tripod.com/

"James" <jnipperxxx@nospamfdn.com> wrote in message
news:14mdnWsDQsTCGzTYnZ2dnUVZ_tyinZ2d@comcast.com. ..
> Yes, I took the cap off after the car sat overnight. I ran it for a
> total
> of 45 minutes. Yes, I put my finger in the COOLANT, and yes it was warm
> but no where near hot. The gauge temp was about 205, even after 45 mins
> no
> hotter , and no detectable flow. I assume the coolant in the nec (where
> the cap goes) would be gurggling or bubbling, etc if there was flow. The
> coolant was even, and not disturbed.
>
> I have not checked the spots on the four corners, as you cannot get to
> it.
>
> --james--
>
>

Re: Followup-- 2000 JGC V-8 still overheating
 

OK
Maybe your coolant system is so efficient that the neck area does not get
super hot. Do you have a factory tow package on this Jeep?
I will ASSuME that the coolant system is FULL and you can't add any more to
the system. Since you can't touch the radiator maybe the coolant in the
neck where you can touch is separated from the coolant inside of the
radiator. Is the upper radiator hose hot or can you touch that?

Yes usually if your engine is working harder it will get hotter. If the
radiator or cooling system is not up to the task then the coolant
temperature will rise.
ALSO if the engine runs lean or has other issues such as a partially clogged
cat then the engine could run hotter too. Has it been tuned or serviced
recently? New filters, air and fuel, spark plugs, etc.?

Did you feel the neck of the radiator right after a good highway trip at 75
mph?
BUT PLEASE DON'T REMOVE THE CAP!!

Running out of ideas without seeing this Jeep. ;-)
good luck!
--
later,
dave AKA vwdoc1
88 XJ 4.0 auto
http://vwdoc1.tripod.com/

"James" <jnipperxxx@nospamfdn.com> wrote in message
news:14mdnWsDQsTCGzTYnZ2dnUVZ_tyinZ2d@comcast.com. ..
> Yes, I took the cap off after the car sat overnight. I ran it for a
> total
> of 45 minutes. Yes, I put my finger in the COOLANT, and yes it was warm
> but no where near hot. The gauge temp was about 205, even after 45 mins
> no
> hotter , and no detectable flow. I assume the coolant in the nec (where
> the cap goes) would be gurggling or bubbling, etc if there was flow. The
> coolant was even, and not disturbed.
>
> I have not checked the spots on the four corners, as you cannot get to
> it.
>
> --james--
>
>

Re: Followup-- 2000 JGC V-8 still overheating
 

You had no coolant flow?

He has no coolant flow with the rad cap off....

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

Hootowl wrote:
>
> On Sat, 13 Jan 2007 20:28:06 -0500, "James" <jnipperxxx@nospamfdn.com>
> wrote:
>
> >Thanks Bill. The thermostat was bought from NAPA, and specified for this
> >vehicle. 4.7 engine.
>
> As I said in the other group, it could be defective, but it just
> sounds to me like my experience with a stock radiator that was a
> little too small for the engine.
>
> Dan
> >

Re: Followup-- 2000 JGC V-8 still overheating
 

You had no coolant flow?

He has no coolant flow with the rad cap off....

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

Hootowl wrote:
>
> On Sat, 13 Jan 2007 20:28:06 -0500, "James" <jnipperxxx@nospamfdn.com>
> wrote:
>
> >Thanks Bill. The thermostat was bought from NAPA, and specified for this
> >vehicle. 4.7 engine.
>
> As I said in the other group, it could be defective, but it just
> sounds to me like my experience with a stock radiator that was a
> little too small for the engine.
>
> Dan
> >

Re: Followup-- 2000 JGC V-8 still overheating
 

You had no coolant flow?

He has no coolant flow with the rad cap off....

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

Hootowl wrote:
>
> On Sat, 13 Jan 2007 20:28:06 -0500, "James" <jnipperxxx@nospamfdn.com>
> wrote:
>
> >Thanks Bill. The thermostat was bought from NAPA, and specified for this
> >vehicle. 4.7 engine.
>
> As I said in the other group, it could be defective, but it just
> sounds to me like my experience with a stock radiator that was a
> little too small for the engine.
>
> Dan
> >

Re: Followup-- 2000 JGC V-8 still overheating
 

You had no coolant flow?

He has no coolant flow with the rad cap off....

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

Hootowl wrote:
>
> On Sat, 13 Jan 2007 20:28:06 -0500, "James" <jnipperxxx@nospamfdn.com>
> wrote:
>
> >Thanks Bill. The thermostat was bought from NAPA, and specified for this
> >vehicle. 4.7 engine.
>
> As I said in the other group, it could be defective, but it just
> sounds to me like my experience with a stock radiator that was a
> little too small for the engine.
>
> Dan
> >

Re: Followup-- 2000 JGC V-8 still overheating
 

SnoMan wrote:
>
> On Sat, 13 Jan 2007 18:26:03 -0500, Mike Romain <romainm@sympatico.ca>
> wrote:
>
> >He could have no real problems with the rad and a wonky sender for the
> >gauge.
>
> Maybe but he could check it with a IR thermometer. I do tend to think
> it is cooling issue though because I have seen this before. He could
> try raise hood starting car up with cap removed and a blanket over
> front end to allow it to heat up and not cool coolant and watch for
> agressive flow in raditor. Also replace cap and let it get hot at
> about a 1000 to 1200 RPM fast idle and see if the clutch fan every
> engages and if so at what temps on gage
> -----------------
> TheSnoMan.com

That is just it!!!!

He HAS done this! He has 'no' coolant flow with the rad cap off the
rad!

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)