Ok I have searched. 99 with 53000 miles, 33"'s. seems to run about 210-215 with normal driving and a/c on, but when i stop for around 5 min or go slow through a parking lot with a/c on (outside temp around 90) it jumps from 215 to 250 real fast. I plan on flushing it first. Then go from there. the water in the rad looks good. any ideas?
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overheating off and on
- Thread starter mgt
- Start date
WobblesXJ
NAXJA Forum User
- Location
- South Carolina
check your fan clutch as well.
XJhammer
NAXJA Forum User
- Location
- Westminster, CO
try running a water wetter mix in the radiator and check the radiator fins for debris if that dosn't help
Start looking for a 2 core or 3 core radiator.
Start looking for a 2 core or 3 core radiator.
Bolognablake
NAXJA Forum User
- Location
- Franklin Tennessee
Chock up another vote for the fan clutch.
xjj33p3r
NAXJA Member #1108
- Location
- garland, tx
Check the water pump. It seems like water isn't moving while at a stand still.
Fergie
NAXJA Forum User
- Location
- Flagstaff, AZ
You didnt search.
xjcrawlr
NAXJA Forum User
- Location
- phoenix AZ
Is it a sudden jump from 210 to 250? Or does it rise rapidly from 210 to 250 over a minute or so?
The first would indicate a faulty gauge or sending unit.
The second indicates the cooling system.
Have you tried shifting to nuetral and bringing to RPM's up to 2000for a minute? How about turning on the heater? Can you hear the aux (electric) fan kick on? How's the belt, tight? When was the t-stat last replaced and what temp is it?
Trouble shooting things is a lot cheaper than replacing things, good luck.
The first would indicate a faulty gauge or sending unit.
The second indicates the cooling system.
Have you tried shifting to nuetral and bringing to RPM's up to 2000for a minute? How about turning on the heater? Can you hear the aux (electric) fan kick on? How's the belt, tight? When was the t-stat last replaced and what temp is it?
Trouble shooting things is a lot cheaper than replacing things, good luck.
It will stay at normal temp until i idle or go slow then it's a sudden jump to 250. oem t-stat, I do turn the heater on when it gets to 250 and it will back down in about 30 sec. My clutch fan looked like is was spinning too slow so i am going to check that out.
I'll third the fan clutch... Get it up to operating temp, pop the hood, stop the engine and see if she spins. If it's free wheeling...it's bad.
Mine started creeping up on me at stop-lights...with new fan clutch, stays steady at 205*. I also have the GDI 3-row...so that helps.
Mine started creeping up on me at stop-lights...with new fan clutch, stays steady at 205*. I also have the GDI 3-row...so that helps.
87CherokeeChief
NAXJA Forum User
- Location
- Sacramental
mgt said:
Yea...throw your hand in there, if it hurts your fan is fine. If it doesnt hurt, new fan clutch!
PS- To the not so intelligent....im kidding
yea sounds like your fan clutch is out dude.