Mike Romain

If you have a bad fan clutch, it will overheat in slow traffic because
all that is cooling the rad is wind pressure from how fast you are
going.

Typically, even the secondary electric fan only comes on in slow traffic
or with the AC too. Once you are at highway speed or the rad is cool
enough, the electric fan shuts off. Maybe it has a bad bearing?

Mike

lilgrasshopper@gmail.com wrote:
>
> Understandable but why does it do it in stop and go traffic? high temp?
> maybe because the tranny works harder under that condition?
> Mike Romain wrote:
> > If you have a mechanical belt driven fan in that, I would suspect the
> > clutch on it has gone bad.
> >
> > 'Blew the rad' because it revved too much? That is ummm... BS.
> >
> > If I can't run my Jeeps at full power (high revs) in low gears off road,
> > they are broken.
> >
> > I also would be suspecting maybe they forgot to tighten down the tranny
> > mount or something, so when it goes in gear, it could be shifting over
> > or they left a bolt loose in the torque converter or the clank it the
> > bad fan clutch.
> >
> > 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)
> >
> > lilgrasshopper@gmail.com wrote:
> > >
> > > Hi all,
> > >
> > > I have a 1995 Jeep Grand Cherokee from hell.
> > >
> > > I recently had the transmisson rebuilt. (It was not engaging). I also
> > > had the radiator replaced. Because the engine was reving and the
> > > transmission was not engaging, it blew the radiator.
> > >
> > > Now:
> > >
> > > I can drive on the highway all day and nothing bad will happen but once
> > > I get into stop and go traffic, like today, on a hot day, I would start
> > > to hear some clanking, then it would get louder, like something
> > > spinning and hitting something else. If I press on the gas pedal to go
> > > faster, the clanking sound would be faster, more frequent so I am
> > > thinking it has something to do with something spinning while I press
> > > on the gas pedal (yeah, really car smart there, lol), if I put it Park,
> > > the sound goes away but if I put it in drive to start driving, it would
> > > make the clanking sound, hard to explain the sound, like a fan is
> > > running and you stick a pencil into it...I think. Now, the thing is, if
> > > I pull the car over, pop the hood, wait like 10 mins, snap the hood,
> > > and start driving, the sound is gone. When I popped the hood, the
> > > engine was really hot but like I said, today was like 90 outside. So to
> > > sum up..
> > >
> > > 1. Drive on highway -- Fine.
> > > 2. Stop and go traffic on hot day --- start to hear clicking sound
> > > follows by clanking sound.
> > > 3. Put car in Park the sound goes away.
> > > 4. Pop the hood, let the engine cool for a few minutes, the sound goes
> > > away.
> > > 5. Recently had the Tranmission rebuilt, radiator replaced.
> > >
> > > The thing is, it is hard to troubleshoot, if I take it to the repair
> > > shop, I would have to have it making the sound but when it happens, I'm
> > > afraid to keep on driving so I'd pull over and pop the hood to let it
> > > cool now. I don't want to ruin whatever that is making that clanking
> > > sound.
> > > Also, the car has a strong hum sound, like ummmmmmmmmmm sound, could be
> > > from the exhaust system, not sure if it's related.
> > >
> > > Any suggestion help , idea is really apreciated.
> > >
> > > -J.

Earle Horton

This is a stretch but maybe the motor mounts get soft when it gets real hot,
or the exhaust pipe gets a millimeter or so longer, and starts hitting
something. For books, the Chilton's or Haynes manual for your model and
year, available from most auto parts stores, will tell you probably all you
need to know.

Earle

<lilgrasshopper@gmail.com> wrote in message
news:1153749572.378561.131110@b28g2000cwb.googlegr oups.com...
> Understandable but why does it do it in stop and go traffic? high temp?
> maybe because the tranny works harder under that condition?
> Mike Romain wrote:
> > If you have a mechanical belt driven fan in that, I would suspect the
> > clutch on it has gone bad.
> >
> > 'Blew the rad' because it revved too much? That is ummm... BS.
> >
> > If I can't run my Jeeps at full power (high revs) in low gears off road,
> > they are broken.
> >
> > I also would be suspecting maybe they forgot to tighten down the tranny
> > mount or something, so when it goes in gear, it could be shifting over
> > or they left a bolt loose in the torque converter or the clank it the
> > bad fan clutch.
> >
> > 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)
> >
> > lilgrasshopper@gmail.com wrote:
> > >
> > > Hi all,
> > >
> > > I have a 1995 Jeep Grand Cherokee from hell.
> > >
> > > I recently had the transmisson rebuilt. (It was not engaging). I also
> > > had the radiator replaced. Because the engine was reving and the
> > > transmission was not engaging, it blew the radiator.
> > >
> > > Now:
> > >
> > > I can drive on the highway all day and nothing bad will happen but
once
> > > I get into stop and go traffic, like today, on a hot day, I would
start
> > > to hear some clanking, then it would get louder, like something
> > > spinning and hitting something else. If I press on the gas pedal to go
> > > faster, the clanking sound would be faster, more frequent so I am
> > > thinking it has something to do with something spinning while I press
> > > on the gas pedal (yeah, really car smart there, lol), if I put it
Park,
> > > the sound goes away but if I put it in drive to start driving, it
would
> > > make the clanking sound, hard to explain the sound, like a fan is
> > > running and you stick a pencil into it...I think. Now, the thing is,
if
> > > I pull the car over, pop the hood, wait like 10 mins, snap the hood,
> > > and start driving, the sound is gone. When I popped the hood, the
> > > engine was really hot but like I said, today was like 90 outside. So
to
> > > sum up..
> > >
> > > 1. Drive on highway -- Fine.
> > > 2. Stop and go traffic on hot day --- start to hear clicking sound
> > > follows by clanking sound.
> > > 3. Put car in Park the sound goes away.
> > > 4. Pop the hood, let the engine cool for a few minutes, the sound goes
> > > away.
> > > 5. Recently had the Tranmission rebuilt, radiator replaced.
> > >
> > > The thing is, it is hard to troubleshoot, if I take it to the repair
> > > shop, I would have to have it making the sound but when it happens,
I'm
> > > afraid to keep on driving so I'd pull over and pop the hood to let it
> > > cool now. I don't want to ruin whatever that is making that clanking
> > > sound.
> > > Also, the car has a strong hum sound, like ummmmmmmmmmm sound, could
be
> > > from the exhaust system, not sure if it's related.
> > >
> > > Any suggestion help , idea is really apreciated.
> > >
> > > -J.
>

Earle Horton

This is a stretch but maybe the motor mounts get soft when it gets real hot,
or the exhaust pipe gets a millimeter or so longer, and starts hitting
something. For books, the Chilton's or Haynes manual for your model and
year, available from most auto parts stores, will tell you probably all you
need to know.

Earle

<lilgrasshopper@gmail.com> wrote in message
news:1153749572.378561.131110@b28g2000cwb.googlegr oups.com...
> Understandable but why does it do it in stop and go traffic? high temp?
> maybe because the tranny works harder under that condition?
> Mike Romain wrote:
> > If you have a mechanical belt driven fan in that, I would suspect the
> > clutch on it has gone bad.
> >
> > 'Blew the rad' because it revved too much? That is ummm... BS.
> >
> > If I can't run my Jeeps at full power (high revs) in low gears off road,
> > they are broken.
> >
> > I also would be suspecting maybe they forgot to tighten down the tranny
> > mount or something, so when it goes in gear, it could be shifting over
> > or they left a bolt loose in the torque converter or the clank it the
> > bad fan clutch.
> >
> > 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)
> >
> > lilgrasshopper@gmail.com wrote:
> > >
> > > Hi all,
> > >
> > > I have a 1995 Jeep Grand Cherokee from hell.
> > >
> > > I recently had the transmisson rebuilt. (It was not engaging). I also
> > > had the radiator replaced. Because the engine was reving and the
> > > transmission was not engaging, it blew the radiator.
> > >
> > > Now:
> > >
> > > I can drive on the highway all day and nothing bad will happen but
once
> > > I get into stop and go traffic, like today, on a hot day, I would
start
> > > to hear some clanking, then it would get louder, like something
> > > spinning and hitting something else. If I press on the gas pedal to go
> > > faster, the clanking sound would be faster, more frequent so I am
> > > thinking it has something to do with something spinning while I press
> > > on the gas pedal (yeah, really car smart there, lol), if I put it
Park,
> > > the sound goes away but if I put it in drive to start driving, it
would
> > > make the clanking sound, hard to explain the sound, like a fan is
> > > running and you stick a pencil into it...I think. Now, the thing is,
if
> > > I pull the car over, pop the hood, wait like 10 mins, snap the hood,
> > > and start driving, the sound is gone. When I popped the hood, the
> > > engine was really hot but like I said, today was like 90 outside. So
to
> > > sum up..
> > >
> > > 1. Drive on highway -- Fine.
> > > 2. Stop and go traffic on hot day --- start to hear clicking sound
> > > follows by clanking sound.
> > > 3. Put car in Park the sound goes away.
> > > 4. Pop the hood, let the engine cool for a few minutes, the sound goes
> > > away.
> > > 5. Recently had the Tranmission rebuilt, radiator replaced.
> > >
> > > The thing is, it is hard to troubleshoot, if I take it to the repair
> > > shop, I would have to have it making the sound but when it happens,
I'm
> > > afraid to keep on driving so I'd pull over and pop the hood to let it
> > > cool now. I don't want to ruin whatever that is making that clanking
> > > sound.
> > > Also, the car has a strong hum sound, like ummmmmmmmmmm sound, could
be
> > > from the exhaust system, not sure if it's related.
> > >
> > > Any suggestion help , idea is really apreciated.
> > >
> > > -J.
>

Earle Horton

This is a stretch but maybe the motor mounts get soft when it gets real hot,
or the exhaust pipe gets a millimeter or so longer, and starts hitting
something. For books, the Chilton's or Haynes manual for your model and
year, available from most auto parts stores, will tell you probably all you
need to know.

Earle

<lilgrasshopper@gmail.com> wrote in message
news:1153749572.378561.131110@b28g2000cwb.googlegr oups.com...
> Understandable but why does it do it in stop and go traffic? high temp?
> maybe because the tranny works harder under that condition?
> Mike Romain wrote:
> > If you have a mechanical belt driven fan in that, I would suspect the
> > clutch on it has gone bad.
> >
> > 'Blew the rad' because it revved too much? That is ummm... BS.
> >
> > If I can't run my Jeeps at full power (high revs) in low gears off road,
> > they are broken.
> >
> > I also would be suspecting maybe they forgot to tighten down the tranny
> > mount or something, so when it goes in gear, it could be shifting over
> > or they left a bolt loose in the torque converter or the clank it the
> > bad fan clutch.
> >
> > 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)
> >
> > lilgrasshopper@gmail.com wrote:
> > >
> > > Hi all,
> > >
> > > I have a 1995 Jeep Grand Cherokee from hell.
> > >
> > > I recently had the transmisson rebuilt. (It was not engaging). I also
> > > had the radiator replaced. Because the engine was reving and the
> > > transmission was not engaging, it blew the radiator.
> > >
> > > Now:
> > >
> > > I can drive on the highway all day and nothing bad will happen but
once
> > > I get into stop and go traffic, like today, on a hot day, I would
start
> > > to hear some clanking, then it would get louder, like something
> > > spinning and hitting something else. If I press on the gas pedal to go
> > > faster, the clanking sound would be faster, more frequent so I am
> > > thinking it has something to do with something spinning while I press
> > > on the gas pedal (yeah, really car smart there, lol), if I put it
Park,
> > > the sound goes away but if I put it in drive to start driving, it
would
> > > make the clanking sound, hard to explain the sound, like a fan is
> > > running and you stick a pencil into it...I think. Now, the thing is,
if
> > > I pull the car over, pop the hood, wait like 10 mins, snap the hood,
> > > and start driving, the sound is gone. When I popped the hood, the
> > > engine was really hot but like I said, today was like 90 outside. So
to
> > > sum up..
> > >
> > > 1. Drive on highway -- Fine.
> > > 2. Stop and go traffic on hot day --- start to hear clicking sound
> > > follows by clanking sound.
> > > 3. Put car in Park the sound goes away.
> > > 4. Pop the hood, let the engine cool for a few minutes, the sound goes
> > > away.
> > > 5. Recently had the Tranmission rebuilt, radiator replaced.
> > >
> > > The thing is, it is hard to troubleshoot, if I take it to the repair
> > > shop, I would have to have it making the sound but when it happens,
I'm
> > > afraid to keep on driving so I'd pull over and pop the hood to let it
> > > cool now. I don't want to ruin whatever that is making that clanking
> > > sound.
> > > Also, the car has a strong hum sound, like ummmmmmmmmmm sound, could
be
> > > from the exhaust system, not sure if it's related.
> > >
> > > Any suggestion help , idea is really apreciated.
> > >
> > > -J.
>

Earle Horton

This is a stretch but maybe the motor mounts get soft when it gets real hot,
or the exhaust pipe gets a millimeter or so longer, and starts hitting
something. For books, the Chilton's or Haynes manual for your model and
year, available from most auto parts stores, will tell you probably all you
need to know.

Earle

<lilgrasshopper@gmail.com> wrote in message
news:1153749572.378561.131110@b28g2000cwb.googlegr oups.com...
> Understandable but why does it do it in stop and go traffic? high temp?
> maybe because the tranny works harder under that condition?
> Mike Romain wrote:
> > If you have a mechanical belt driven fan in that, I would suspect the
> > clutch on it has gone bad.
> >
> > 'Blew the rad' because it revved too much? That is ummm... BS.
> >
> > If I can't run my Jeeps at full power (high revs) in low gears off road,
> > they are broken.
> >
> > I also would be suspecting maybe they forgot to tighten down the tranny
> > mount or something, so when it goes in gear, it could be shifting over
> > or they left a bolt loose in the torque converter or the clank it the
> > bad fan clutch.
> >
> > 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)
> >
> > lilgrasshopper@gmail.com wrote:
> > >
> > > Hi all,
> > >
> > > I have a 1995 Jeep Grand Cherokee from hell.
> > >
> > > I recently had the transmisson rebuilt. (It was not engaging). I also
> > > had the radiator replaced. Because the engine was reving and the
> > > transmission was not engaging, it blew the radiator.
> > >
> > > Now:
> > >
> > > I can drive on the highway all day and nothing bad will happen but
once
> > > I get into stop and go traffic, like today, on a hot day, I would
start
> > > to hear some clanking, then it would get louder, like something
> > > spinning and hitting something else. If I press on the gas pedal to go
> > > faster, the clanking sound would be faster, more frequent so I am
> > > thinking it has something to do with something spinning while I press
> > > on the gas pedal (yeah, really car smart there, lol), if I put it
Park,
> > > the sound goes away but if I put it in drive to start driving, it
would
> > > make the clanking sound, hard to explain the sound, like a fan is
> > > running and you stick a pencil into it...I think. Now, the thing is,
if
> > > I pull the car over, pop the hood, wait like 10 mins, snap the hood,
> > > and start driving, the sound is gone. When I popped the hood, the
> > > engine was really hot but like I said, today was like 90 outside. So
to
> > > sum up..
> > >
> > > 1. Drive on highway -- Fine.
> > > 2. Stop and go traffic on hot day --- start to hear clicking sound
> > > follows by clanking sound.
> > > 3. Put car in Park the sound goes away.
> > > 4. Pop the hood, let the engine cool for a few minutes, the sound goes
> > > away.
> > > 5. Recently had the Tranmission rebuilt, radiator replaced.
> > >
> > > The thing is, it is hard to troubleshoot, if I take it to the repair
> > > shop, I would have to have it making the sound but when it happens,
I'm
> > > afraid to keep on driving so I'd pull over and pop the hood to let it
> > > cool now. I don't want to ruin whatever that is making that clanking
> > > sound.
> > > Also, the car has a strong hum sound, like ummmmmmmmmmm sound, could
be
> > > from the exhaust system, not sure if it's related.
> > >
> > > Any suggestion help , idea is really apreciated.
> > >
> > > -J.
>

Jeff DeWitt

lilgrasshopper@gmail.com wrote:
> Hi Jeff:
>
> I have not put it in Park and Rev the engine, worth a try. I know when
> I put it in drive, it would start to make the noise, even when stopped.
>
>
> Jeff DeWitt wrote:
>
>>lilgrasshopper@gmail.com wrote:
>>
>>>Hi Earle:
>>>
>>>All I can think of is:
>>>
>>>1. Hot day.
>>>2. If I put the gear in anything but Park, it makes that clanking
>>>sound.
>>>3. Faster I go, the faster the clanking.
>>>4. This is in slow stop and go traffic.
>>>
>>>So, in term of the engine, what spins when it's in Park and what spins
>>>when it's in Drive. ? because something made it stop clanking when I'm
>>>in park.
>>>
>>>Guess I can take it back to the transmission people to have them take a
>>>look.
>>>
>>>Thanks,
>>>
>>>-J.
>>>Earle Horton wrote:
>>>
>>>
>>>>Could the exhaust be banging on something? I think that way because putting
>>>>in Park takes the torque off the drive train, and lets everything settle
>>>>into its natural alignment. Could the transmission people have left out a
>>>>bolt or two? Or a bracket? Motor mounts loose?
>>>>
>>>>"Clanking" makes me think of the flex plate, but those usually don't come
>>>>and go. Or a u-joint, but those are not usually temperature related.
>>>>
>>>>If you can get under the vehicle, check all over for loose stuff, leaking
>>>>fluid (any kind) or obvious missing bolts.
>>>>
>>>>Earle
>>>>
>>>><lilgrasshopper@gmail.com> wrote in message
>>>>news:1153710466.306465.198680@p79g2000cwp.goog legroups.com...
>>>>
>>>>
>>>>>Hi all,
>>>>>
>>>>>I have a 1995 Jeep Grand Cherokee from hell.
>>>>>
>>>>>I recently had the transmisson rebuilt. (It was not engaging). I also
>>>>>had the radiator replaced. Because the engine was reving and the
>>>>>transmission was not engaging, it blew the radiator.
>>>>>
>>>>>Now:
>>>>>
>>>>>I can drive on the highway all day and nothing bad will happen but once
>>>>>I get into stop and go traffic, like today, on a hot day, I would start
>>>>>to hear some clanking, then it would get louder, like something
>>>>>spinning and hitting something else. If I press on the gas pedal to go
>>>>>faster, the clanking sound would be faster, more frequent so I am
>>>>>thinking it has something to do with something spinning while I press
>>>>>on the gas pedal (yeah, really car smart there, lol), if I put it Park,
>>>>>the sound goes away but if I put it in drive to start driving, it would
>>>>>make the clanking sound, hard to explain the sound, like a fan is
>>>>>running and you stick a pencil into it...I think. Now, the thing is, if
>>>>>I pull the car over, pop the hood, wait like 10 mins, snap the hood,
>>>>>and start driving, the sound is gone. When I popped the hood, the
>>>>>engine was really hot but like I said, today was like 90 outside. So to
>>>>>sum up..
>>>>>
>>>>>1. Drive on highway -- Fine.
>>>>>2. Stop and go traffic on hot day --- start to hear clicking sound
>>>>>follows by clanking sound.
>>>>>3. Put car in Park the sound goes away.
>>>>>4. Pop the hood, let the engine cool for a few minutes, the sound goes
>>>>>away.
>>>>>5. Recently had the Tranmission rebuilt, radiator replaced.
>>>>>
>>>>>
>>>>>The thing is, it is hard to troubleshoot, if I take it to the repair
>>>>>shop, I would have to have it making the sound but when it happens, I'm
>>>>>afraid to keep on driving so I'd pull over and pop the hood to let it
>>>>>cool now. I don't want to ruin whatever that is making that clanking
>>>>>sound.
>>>>>Also, the car has a strong hum sound, like ummmmmmmmmmm sound, could be
>>>>
>>>>>from the exhaust system, not sure if it's related.
>>>>
>>>>>Any suggestion help , idea is really apreciated.
>>>>>
>>>>>-J.
>>>>>
>>>
>>>
>>Does it make the noise just when you are moving or if you put it in Park
>>and rev the engine a bit will you hear it then too?
>>
>>Jeff DeWitt
>
>
I think you answered my question, if it was say the exhaust system
hitting a U joint you would only hear the noise when the Jeep was
actually moving.

Something else you might try, have someone rev the engine while you
watch it. What you would be looking for is the engine shifting around
more than it should because of broken motor or transmission mounts. The
effect will be a lot more pronounced if you have it in gear, but of
course BE SURE to set the hand brake, have your assistant step on the
brake AND chock the wheels before trying that... and DON'T stand in front!

Jeff DeWitt

Jeff DeWitt

lilgrasshopper@gmail.com wrote:
> Hi Jeff:
>
> I have not put it in Park and Rev the engine, worth a try. I know when
> I put it in drive, it would start to make the noise, even when stopped.
>
>
> Jeff DeWitt wrote:
>
>>lilgrasshopper@gmail.com wrote:
>>
>>>Hi Earle:
>>>
>>>All I can think of is:
>>>
>>>1. Hot day.
>>>2. If I put the gear in anything but Park, it makes that clanking
>>>sound.
>>>3. Faster I go, the faster the clanking.
>>>4. This is in slow stop and go traffic.
>>>
>>>So, in term of the engine, what spins when it's in Park and what spins
>>>when it's in Drive. ? because something made it stop clanking when I'm
>>>in park.
>>>
>>>Guess I can take it back to the transmission people to have them take a
>>>look.
>>>
>>>Thanks,
>>>
>>>-J.
>>>Earle Horton wrote:
>>>
>>>
>>>>Could the exhaust be banging on something? I think that way because putting
>>>>in Park takes the torque off the drive train, and lets everything settle
>>>>into its natural alignment. Could the transmission people have left out a
>>>>bolt or two? Or a bracket? Motor mounts loose?
>>>>
>>>>"Clanking" makes me think of the flex plate, but those usually don't come
>>>>and go. Or a u-joint, but those are not usually temperature related.
>>>>
>>>>If you can get under the vehicle, check all over for loose stuff, leaking
>>>>fluid (any kind) or obvious missing bolts.
>>>>
>>>>Earle
>>>>
>>>><lilgrasshopper@gmail.com> wrote in message
>>>>news:1153710466.306465.198680@p79g2000cwp.goog legroups.com...
>>>>
>>>>
>>>>>Hi all,
>>>>>
>>>>>I have a 1995 Jeep Grand Cherokee from hell.
>>>>>
>>>>>I recently had the transmisson rebuilt. (It was not engaging). I also
>>>>>had the radiator replaced. Because the engine was reving and the
>>>>>transmission was not engaging, it blew the radiator.
>>>>>
>>>>>Now:
>>>>>
>>>>>I can drive on the highway all day and nothing bad will happen but once
>>>>>I get into stop and go traffic, like today, on a hot day, I would start
>>>>>to hear some clanking, then it would get louder, like something
>>>>>spinning and hitting something else. If I press on the gas pedal to go
>>>>>faster, the clanking sound would be faster, more frequent so I am
>>>>>thinking it has something to do with something spinning while I press
>>>>>on the gas pedal (yeah, really car smart there, lol), if I put it Park,
>>>>>the sound goes away but if I put it in drive to start driving, it would
>>>>>make the clanking sound, hard to explain the sound, like a fan is
>>>>>running and you stick a pencil into it...I think. Now, the thing is, if
>>>>>I pull the car over, pop the hood, wait like 10 mins, snap the hood,
>>>>>and start driving, the sound is gone. When I popped the hood, the
>>>>>engine was really hot but like I said, today was like 90 outside. So to
>>>>>sum up..
>>>>>
>>>>>1. Drive on highway -- Fine.
>>>>>2. Stop and go traffic on hot day --- start to hear clicking sound
>>>>>follows by clanking sound.
>>>>>3. Put car in Park the sound goes away.
>>>>>4. Pop the hood, let the engine cool for a few minutes, the sound goes
>>>>>away.
>>>>>5. Recently had the Tranmission rebuilt, radiator replaced.
>>>>>
>>>>>
>>>>>The thing is, it is hard to troubleshoot, if I take it to the repair
>>>>>shop, I would have to have it making the sound but when it happens, I'm
>>>>>afraid to keep on driving so I'd pull over and pop the hood to let it
>>>>>cool now. I don't want to ruin whatever that is making that clanking
>>>>>sound.
>>>>>Also, the car has a strong hum sound, like ummmmmmmmmmm sound, could be
>>>>
>>>>>from the exhaust system, not sure if it's related.
>>>>
>>>>>Any suggestion help , idea is really apreciated.
>>>>>
>>>>>-J.
>>>>>
>>>
>>>
>>Does it make the noise just when you are moving or if you put it in Park
>>and rev the engine a bit will you hear it then too?
>>
>>Jeff DeWitt
>
>
I think you answered my question, if it was say the exhaust system
hitting a U joint you would only hear the noise when the Jeep was
actually moving.

Something else you might try, have someone rev the engine while you
watch it. What you would be looking for is the engine shifting around
more than it should because of broken motor or transmission mounts. The
effect will be a lot more pronounced if you have it in gear, but of
course BE SURE to set the hand brake, have your assistant step on the
brake AND chock the wheels before trying that... and DON'T stand in front!

Jeff DeWitt

Jeff DeWitt

lilgrasshopper@gmail.com wrote:
> Hi Jeff:
>
> I have not put it in Park and Rev the engine, worth a try. I know when
> I put it in drive, it would start to make the noise, even when stopped.
>
>
> Jeff DeWitt wrote:
>
>>lilgrasshopper@gmail.com wrote:
>>
>>>Hi Earle:
>>>
>>>All I can think of is:
>>>
>>>1. Hot day.
>>>2. If I put the gear in anything but Park, it makes that clanking
>>>sound.
>>>3. Faster I go, the faster the clanking.
>>>4. This is in slow stop and go traffic.
>>>
>>>So, in term of the engine, what spins when it's in Park and what spins
>>>when it's in Drive. ? because something made it stop clanking when I'm
>>>in park.
>>>
>>>Guess I can take it back to the transmission people to have them take a
>>>look.
>>>
>>>Thanks,
>>>
>>>-J.
>>>Earle Horton wrote:
>>>
>>>
>>>>Could the exhaust be banging on something? I think that way because putting
>>>>in Park takes the torque off the drive train, and lets everything settle
>>>>into its natural alignment. Could the transmission people have left out a
>>>>bolt or two? Or a bracket? Motor mounts loose?
>>>>
>>>>"Clanking" makes me think of the flex plate, but those usually don't come
>>>>and go. Or a u-joint, but those are not usually temperature related.
>>>>
>>>>If you can get under the vehicle, check all over for loose stuff, leaking
>>>>fluid (any kind) or obvious missing bolts.
>>>>
>>>>Earle
>>>>
>>>><lilgrasshopper@gmail.com> wrote in message
>>>>news:1153710466.306465.198680@p79g2000cwp.goog legroups.com...
>>>>
>>>>
>>>>>Hi all,
>>>>>
>>>>>I have a 1995 Jeep Grand Cherokee from hell.
>>>>>
>>>>>I recently had the transmisson rebuilt. (It was not engaging). I also
>>>>>had the radiator replaced. Because the engine was reving and the
>>>>>transmission was not engaging, it blew the radiator.
>>>>>
>>>>>Now:
>>>>>
>>>>>I can drive on the highway all day and nothing bad will happen but once
>>>>>I get into stop and go traffic, like today, on a hot day, I would start
>>>>>to hear some clanking, then it would get louder, like something
>>>>>spinning and hitting something else. If I press on the gas pedal to go
>>>>>faster, the clanking sound would be faster, more frequent so I am
>>>>>thinking it has something to do with something spinning while I press
>>>>>on the gas pedal (yeah, really car smart there, lol), if I put it Park,
>>>>>the sound goes away but if I put it in drive to start driving, it would
>>>>>make the clanking sound, hard to explain the sound, like a fan is
>>>>>running and you stick a pencil into it...I think. Now, the thing is, if
>>>>>I pull the car over, pop the hood, wait like 10 mins, snap the hood,
>>>>>and start driving, the sound is gone. When I popped the hood, the
>>>>>engine was really hot but like I said, today was like 90 outside. So to
>>>>>sum up..
>>>>>
>>>>>1. Drive on highway -- Fine.
>>>>>2. Stop and go traffic on hot day --- start to hear clicking sound
>>>>>follows by clanking sound.
>>>>>3. Put car in Park the sound goes away.
>>>>>4. Pop the hood, let the engine cool for a few minutes, the sound goes
>>>>>away.
>>>>>5. Recently had the Tranmission rebuilt, radiator replaced.
>>>>>
>>>>>
>>>>>The thing is, it is hard to troubleshoot, if I take it to the repair
>>>>>shop, I would have to have it making the sound but when it happens, I'm
>>>>>afraid to keep on driving so I'd pull over and pop the hood to let it
>>>>>cool now. I don't want to ruin whatever that is making that clanking
>>>>>sound.
>>>>>Also, the car has a strong hum sound, like ummmmmmmmmmm sound, could be
>>>>
>>>>>from the exhaust system, not sure if it's related.
>>>>
>>>>>Any suggestion help , idea is really apreciated.
>>>>>
>>>>>-J.
>>>>>
>>>
>>>
>>Does it make the noise just when you are moving or if you put it in Park
>>and rev the engine a bit will you hear it then too?
>>
>>Jeff DeWitt
>
>
I think you answered my question, if it was say the exhaust system
hitting a U joint you would only hear the noise when the Jeep was
actually moving.

Something else you might try, have someone rev the engine while you
watch it. What you would be looking for is the engine shifting around
more than it should because of broken motor or transmission mounts. The
effect will be a lot more pronounced if you have it in gear, but of
course BE SURE to set the hand brake, have your assistant step on the
brake AND chock the wheels before trying that... and DON'T stand in front!

Jeff DeWitt

Jeff DeWitt

lilgrasshopper@gmail.com wrote:
> Hi Jeff:
>
> I have not put it in Park and Rev the engine, worth a try. I know when
> I put it in drive, it would start to make the noise, even when stopped.
>
>
> Jeff DeWitt wrote:
>
>>lilgrasshopper@gmail.com wrote:
>>
>>>Hi Earle:
>>>
>>>All I can think of is:
>>>
>>>1. Hot day.
>>>2. If I put the gear in anything but Park, it makes that clanking
>>>sound.
>>>3. Faster I go, the faster the clanking.
>>>4. This is in slow stop and go traffic.
>>>
>>>So, in term of the engine, what spins when it's in Park and what spins
>>>when it's in Drive. ? because something made it stop clanking when I'm
>>>in park.
>>>
>>>Guess I can take it back to the transmission people to have them take a
>>>look.
>>>
>>>Thanks,
>>>
>>>-J.
>>>Earle Horton wrote:
>>>
>>>
>>>>Could the exhaust be banging on something? I think that way because putting
>>>>in Park takes the torque off the drive train, and lets everything settle
>>>>into its natural alignment. Could the transmission people have left out a
>>>>bolt or two? Or a bracket? Motor mounts loose?
>>>>
>>>>"Clanking" makes me think of the flex plate, but those usually don't come
>>>>and go. Or a u-joint, but those are not usually temperature related.
>>>>
>>>>If you can get under the vehicle, check all over for loose stuff, leaking
>>>>fluid (any kind) or obvious missing bolts.
>>>>
>>>>Earle
>>>>
>>>><lilgrasshopper@gmail.com> wrote in message
>>>>news:1153710466.306465.198680@p79g2000cwp.goog legroups.com...
>>>>
>>>>
>>>>>Hi all,
>>>>>
>>>>>I have a 1995 Jeep Grand Cherokee from hell.
>>>>>
>>>>>I recently had the transmisson rebuilt. (It was not engaging). I also
>>>>>had the radiator replaced. Because the engine was reving and the
>>>>>transmission was not engaging, it blew the radiator.
>>>>>
>>>>>Now:
>>>>>
>>>>>I can drive on the highway all day and nothing bad will happen but once
>>>>>I get into stop and go traffic, like today, on a hot day, I would start
>>>>>to hear some clanking, then it would get louder, like something
>>>>>spinning and hitting something else. If I press on the gas pedal to go
>>>>>faster, the clanking sound would be faster, more frequent so I am
>>>>>thinking it has something to do with something spinning while I press
>>>>>on the gas pedal (yeah, really car smart there, lol), if I put it Park,
>>>>>the sound goes away but if I put it in drive to start driving, it would
>>>>>make the clanking sound, hard to explain the sound, like a fan is
>>>>>running and you stick a pencil into it...I think. Now, the thing is, if
>>>>>I pull the car over, pop the hood, wait like 10 mins, snap the hood,
>>>>>and start driving, the sound is gone. When I popped the hood, the
>>>>>engine was really hot but like I said, today was like 90 outside. So to
>>>>>sum up..
>>>>>
>>>>>1. Drive on highway -- Fine.
>>>>>2. Stop and go traffic on hot day --- start to hear clicking sound
>>>>>follows by clanking sound.
>>>>>3. Put car in Park the sound goes away.
>>>>>4. Pop the hood, let the engine cool for a few minutes, the sound goes
>>>>>away.
>>>>>5. Recently had the Tranmission rebuilt, radiator replaced.
>>>>>
>>>>>
>>>>>The thing is, it is hard to troubleshoot, if I take it to the repair
>>>>>shop, I would have to have it making the sound but when it happens, I'm
>>>>>afraid to keep on driving so I'd pull over and pop the hood to let it
>>>>>cool now. I don't want to ruin whatever that is making that clanking
>>>>>sound.
>>>>>Also, the car has a strong hum sound, like ummmmmmmmmmm sound, could be
>>>>
>>>>>from the exhaust system, not sure if it's related.
>>>>
>>>>>Any suggestion help , idea is really apreciated.
>>>>>
>>>>>-J.
>>>>>
>>>
>>>
>>Does it make the noise just when you are moving or if you put it in Park
>>and rev the engine a bit will you hear it then too?
>>
>>Jeff DeWitt
>
>
I think you answered my question, if it was say the exhaust system
hitting a U joint you would only hear the noise when the Jeep was
actually moving.

Something else you might try, have someone rev the engine while you
watch it. What you would be looking for is the engine shifting around
more than it should because of broken motor or transmission mounts. The
effect will be a lot more pronounced if you have it in gear, but of
course BE SURE to set the hand brake, have your assistant step on the
brake AND chock the wheels before trying that... and DON'T stand in front!

Jeff DeWitt

Lon

If you pretty much know cars, the factory service manual is the best, in
that it explains how each of the systems works, plus how to perform
simple and complex checks. You can usually guesstimate the pita factor
from the FSM.



lilgrasshopper@gmail.com proclaimed:
> Hi guys:
>
> What's a good book for cars? I know when it gets complicated like this,
> take it to the shop, turn around and bend down but I'd like to read and
> see how things work. (I work as a network Admin at my corp. inc).
> Shilman? Shulman?
>
> Thanks,
>
> John,
>
> Roosevelt, NJ
>
>
> DougW wrote:
>
>>lilgrasshopper@gmail.com wrote:
>>
>>>Hi all,
>>>
>>>I have a 1995 Jeep Grand Cherokee from hell.
>>
>>>I can drive on the highway all day and nothing bad will happen but
>>>once I get into stop and go traffic, like today, on a hot day, I
>>>would start to hear some clanking, then it would get louder, like
>>>something spinning and hitting something else. If I press on the gas
>>>pedal to go faster, the clanking sound would be faster, more frequent
>>>so I am thinking it has something to do with something spinning while
>>
>>I hope I'm wrong, but that sounds like a bad rear mains bearing.
>>They usually make a bad clank/grind noise when the engine is under load
>>(like pulling a trailer) but eventually will make that noise even when
>>taking off.
>>
>>Get yourself a big flat screwdriver or small pry bar. From under
>>the engine see how far the harmonic balancer will pry forward from the
>>engine and go back into the engine. It shouldn't move more than about
>>1/8" max. If it moves 1/4 like mine did way back when, then it's time
>>for a shortblock. Do not pry hard.. and pry against the inner ring on
>>the balancer. If it's going to move it will move easily.
>>
>>--
>>DougW
>
>