Overheating problems.
05-09-2010, 10:52 AM
#1
Newbie
Thread Starter
Join Date: May 2010
Posts: 11
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
Overheating problems.
Hello My name is Jim, I have a 95 Jeep Cherokee sport and I've been having some overheating issues. It has basically a new cooling system. New Radiator, Tstat and water pump. Every thing has been flushed, fresh oil and filter the whole 9 yards. However it still overheats after driving for a while. It will stay at around 210 for awhile and then usually it will begin to raise while idling. When I move again it will still stay hot and continue to rise to the red. The kicker is the Radiator cap is cold and the engine is blazing. It is a brand new cap as well. Seems like a circulation problem but I can't figure it. When the Jeep is cold I can crank it up and let it idle for 30 min and it won't go past 210 but as soon as I start driving it heats up after about 15 or 20 min. Any Ideas? Air bubble possibly? Is there a way to burp the Jeep? Blown head gasket? It runs great when the temp is good. Like the champ it is, it's a warrior I refuse to give up on it. Thanks for any help folks.. ps. I am in Florida so it is hot and humid driving conditions. Keep in mind also that I had all fresh 50/50 fluids in system as well. Thanks. Jim 
05-09-2010, 11:56 AM
#2
Junior Member
Join Date: Sep 2009
Location: Vancouver, Wa.
Posts: 92
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1991
Model: Cherokee
Engine: 4.0 HO
Quick fix but not problem solver, run with your defrost or AC on. This will turn on your electric fan more often. Is your top hose hot? If not you have a blockage somewhere. I don't understand how the cap could be cool. How about your overflow tank? Is the level changing at different temps?
05-09-2010, 12:52 PM
#3
Newbie
Thread Starter
Join Date: May 2010
Posts: 11
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
Yes the top hose does get hot and the overflow tank does seem to change levels. Higher when hot lower when cold. I believe the switch for the electric fan doesnt work. The Elecriric fan hasnt worked for years. It has always ran hot but not hotter than 210 - 215. My next step I guess is to get the electric fan working and see if there's a improvement. The 3/4 hose connecting the overflow tank and the rad cap is luke warm as well. Everything else is blazing.
05-09-2010, 12:54 PM
#4
Newbie
Thread Starter
Join Date: May 2010
Posts: 11
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
[QUOTE=Magic1;533614]Yes the top hose does get hot and the overflow tank does seem to change levels. Higher when hot lower when cold. I believe the switch for the electric fan doesnt work. The Electric fan hasnt worked for years. It has always ran hot but not hotter than 210 - 215. My next step I guess is to get the electric fan working and see if there's a improvement. The 3/4 hose connecting the overflow tank and the rad cap is luke warm as well. Everything else is blazing. It tales about 15 min and a little driving and it's close to 260.
05-09-2010, 01:05 PM
#5
"CF Moderator"
Join Date: Sep 2008
Location: N.J. Shore Area
Posts: 3,045
Likes: 0
Received 2 Likes
on
2 Posts
Year: 1994
Model: Cherokee
Engine: l6 HO
Try running the motor then shut it off and have someone see how long the clutch fan spins after the motor is shut down. It should only spin 1 maybe2-3 times and stop, if it keeps spinning it means the clutch is worn out...Tj
Trending Topics
05-09-2010, 01:38 PM
#8
"CF Moderator"
Join Date: Sep 2008
Location: N.J. Shore Area
Posts: 3,045
Likes: 0
Received 2 Likes
on
2 Posts
Year: 1994
Model: Cherokee
Engine: l6 HO
Read this post https://www.cherokeeforum.com/f2/my-...heating-19007/ or search for "burping a motor" or here http://www.lunghd.com/Tech_Articles/...BurpAirMod.htm
05-09-2010, 01:59 PM
#9
Newbie
Thread Starter
Join Date: May 2010
Posts: 11
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
Probably a stupid question but what way should the water pump pulley be spinning clockwise or counter? I have flushed and flushed the system. Ran it with the cap higher then the motor and everything. Thanks for everyones time I appreciate any advice you have.
05-09-2010, 03:21 PM
#15
Senior Member
Join Date: Jun 2009
Location: pennsylvania
Posts: 562
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1995
Model: Cherokee
Engine: 4.0 liter
i have same model as you. i over heated before. check your hoses. one of mine was closed/pluged up and one was collapsed. also. u flushed it? so you added coolant back in hopefully. and it could be your water pump. or your ac compressor. do you have cold air in your a/c?