I had the same problem in my 94YJ. Does your gauge show the temp going up
then dropping back down 10-15 degrees after a while? If so it means your
thermostat is opening and closing. I replaced both my thermostat and fan
clutch and was about to replace the water pump too. Mike gave me some good
pointers and ideas so I just left it alone. Try a search or the archives
from last summer time frame for his answers to me. The temp now is a little
lower than it was before but not to worry.
H-S-F

"jerryg" <Gregginn7@msn.com> wrote in message
news:1166155084.263523.101330@j72g2000cwa.googlegr oups.com...
>I have a 95 yj 4.0 liter, and the temp gauge reads about 235 degrees
> and goes up and down from there. All the way to over heating but it
> doesn't over heat!! Just had the head gasket replaced and did the
> thermostat tonight but the temp gauge still goes up and down. Any
> suggestions? Any help would be appreciated.
>
> Thanks,
>
> Greg
>

 

I had the same problem in my 94YJ. Does your gauge show the temp going up
then dropping back down 10-15 degrees after a while? If so it means your
thermostat is opening and closing. I replaced both my thermostat and fan
clutch and was about to replace the water pump too. Mike gave me some good
pointers and ideas so I just left it alone. Try a search or the archives
from last summer time frame for his answers to me. The temp now is a little
lower than it was before but not to worry.
H-S-F

"jerryg" <Gregginn7@msn.com> wrote in message
news:1166155084.263523.101330@j72g2000cwa.googlegr oups.com...
>I have a 95 yj 4.0 liter, and the temp gauge reads about 235 degrees
> and goes up and down from there. All the way to over heating but it
> doesn't over heat!! Just had the head gasket replaced and did the
> thermostat tonight but the temp gauge still goes up and down. Any
> suggestions? Any help would be appreciated.
>
> Thanks,
>
> Greg
>

 

I had the same problem in my 94YJ. Does your gauge show the temp going up
then dropping back down 10-15 degrees after a while? If so it means your
thermostat is opening and closing. I replaced both my thermostat and fan
clutch and was about to replace the water pump too. Mike gave me some good
pointers and ideas so I just left it alone. Try a search or the archives
from last summer time frame for his answers to me. The temp now is a little
lower than it was before but not to worry.
H-S-F

"jerryg" <Gregginn7@msn.com> wrote in message
news:1166155084.263523.101330@j72g2000cwa.googlegr oups.com...
>I have a 95 yj 4.0 liter, and the temp gauge reads about 235 degrees
> and goes up and down from there. All the way to over heating but it
> doesn't over heat!! Just had the head gasket replaced and did the
> thermostat tonight but the temp gauge still goes up and down. Any
> suggestions? Any help would be appreciated.
>
> Thanks,
>
> Greg
>

 

Here's what Mike said (Thurs, Mar 2 2006 10:29 pm)

" would check the fan clutch first. If you heat up the engine, the fan
clutch gets very stiff and will stop the fan almost instantly when the
engine shuts down. If it continues to spin when hot, it is worn out.

Once off, you should not be able to make it spin with a hard finger push
when hot.


You also might want to clean the sender's connection. It is on the top
back corner of the head with a single purple wire going to it.


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)
"

Dave Milne, Scotland
'91 Grand Wagoneer, '99 TJ

"Help-Slip-Franklin" <blackyourhair1988@yahoo.com> wrote in message
news:Ehzgh.12$hy6.2@trnddc05...
> I had the same problem in my 94YJ. Does your gauge show the temp going up
> then dropping back down 10-15 degrees after a while? If so it means your
> thermostat is opening and closing. I replaced both my thermostat and fan
> clutch and was about to replace the water pump too. Mike gave me some good
> pointers and ideas so I just left it alone. Try a search or the archives
> from last summer time frame for his answers to me. The temp now is a
little
> lower than it was before but not to worry.
> H-S-F
>
> "jerryg" <Gregginn7@msn.com> wrote in message
> news:1166155084.263523.101330@j72g2000cwa.googlegr oups.com...
> >I have a 95 yj 4.0 liter, and the temp gauge reads about 235 degrees
> > and goes up and down from there. All the way to over heating but it
> > doesn't over heat!! Just had the head gasket replaced and did the
> > thermostat tonight but the temp gauge still goes up and down. Any
> > suggestions? Any help would be appreciated.
> >
> > Thanks,
> >
> > Greg
> >
>
>

 

Here's what Mike said (Thurs, Mar 2 2006 10:29 pm)

" would check the fan clutch first. If you heat up the engine, the fan
clutch gets very stiff and will stop the fan almost instantly when the
engine shuts down. If it continues to spin when hot, it is worn out.

Once off, you should not be able to make it spin with a hard finger push
when hot.


You also might want to clean the sender's connection. It is on the top
back corner of the head with a single purple wire going to it.


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)
"

Dave Milne, Scotland
'91 Grand Wagoneer, '99 TJ

"Help-Slip-Franklin" <blackyourhair1988@yahoo.com> wrote in message
news:Ehzgh.12$hy6.2@trnddc05...
> I had the same problem in my 94YJ. Does your gauge show the temp going up
> then dropping back down 10-15 degrees after a while? If so it means your
> thermostat is opening and closing. I replaced both my thermostat and fan
> clutch and was about to replace the water pump too. Mike gave me some good
> pointers and ideas so I just left it alone. Try a search or the archives
> from last summer time frame for his answers to me. The temp now is a
little
> lower than it was before but not to worry.
> H-S-F
>
> "jerryg" <Gregginn7@msn.com> wrote in message
> news:1166155084.263523.101330@j72g2000cwa.googlegr oups.com...
> >I have a 95 yj 4.0 liter, and the temp gauge reads about 235 degrees
> > and goes up and down from there. All the way to over heating but it
> > doesn't over heat!! Just had the head gasket replaced and did the
> > thermostat tonight but the temp gauge still goes up and down. Any
> > suggestions? Any help would be appreciated.
> >
> > Thanks,
> >
> > Greg
> >
>
>

 

Here's what Mike said (Thurs, Mar 2 2006 10:29 pm)

" would check the fan clutch first. If you heat up the engine, the fan
clutch gets very stiff and will stop the fan almost instantly when the
engine shuts down. If it continues to spin when hot, it is worn out.

Once off, you should not be able to make it spin with a hard finger push
when hot.


You also might want to clean the sender's connection. It is on the top
back corner of the head with a single purple wire going to it.


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)
"

Dave Milne, Scotland
'91 Grand Wagoneer, '99 TJ

"Help-Slip-Franklin" <blackyourhair1988@yahoo.com> wrote in message
news:Ehzgh.12$hy6.2@trnddc05...
> I had the same problem in my 94YJ. Does your gauge show the temp going up
> then dropping back down 10-15 degrees after a while? If so it means your
> thermostat is opening and closing. I replaced both my thermostat and fan
> clutch and was about to replace the water pump too. Mike gave me some good
> pointers and ideas so I just left it alone. Try a search or the archives
> from last summer time frame for his answers to me. The temp now is a
little
> lower than it was before but not to worry.
> H-S-F
>
> "jerryg" <Gregginn7@msn.com> wrote in message
> news:1166155084.263523.101330@j72g2000cwa.googlegr oups.com...
> >I have a 95 yj 4.0 liter, and the temp gauge reads about 235 degrees
> > and goes up and down from there. All the way to over heating but it
> > doesn't over heat!! Just had the head gasket replaced and did the
> > thermostat tonight but the temp gauge still goes up and down. Any
> > suggestions? Any help would be appreciated.
> >
> > Thanks,
> >
> > Greg
> >
>
>