Average Coolant Temp and Oil Pressure
Thread Starter
CF Veteran
Joined: Oct 2009
Posts: 1,487
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From: Parrish
Year: 1989
Model: Comanche
Engine: 4.0
So what re you guys running as far as temp and oil pressure. I just swapped my cluster and was just trying to figure out if my temperature especially is average.
Its summer and I live in Florida and always have the air on Max.
Average in town no highway: 215
Average highway: 220-225
Immediatly after getting of the highway: 235-240. It usually doesnt touch 240 but if it does it is only for a second.
City driving after highway: 220
Oil Pressure:
60 on cold startup
30 at idle
35-40 in town not idleing
40-50 highway
Just wondering if these are about average. The only thing I am somewhat concerned about is the temperature. I have replaced basically everything in the cooling system except the radiator and overflow bottle. Literally, Everything, So am I still running marginally hot or is that about average.
Its summer and I live in Florida and always have the air on Max.
Average in town no highway: 215
Average highway: 220-225
Immediatly after getting of the highway: 235-240. It usually doesnt touch 240 but if it does it is only for a second.
City driving after highway: 220
Oil Pressure:
60 on cold startup
30 at idle
35-40 in town not idleing
40-50 highway
Just wondering if these are about average. The only thing I am somewhat concerned about is the temperature. I have replaced basically everything in the cooling system except the radiator and overflow bottle. Literally, Everything, So am I still running marginally hot or is that about average.
CF Veteran
Joined: Mar 2010
Posts: 1,200
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From: wilkes barre PA.
Year: 96
Model: Cherokee
Engine: 6 cylinder
no your not overheating jeeps typically run at around 195-210 your really not overheating till you hit bout 240ish then i would start looking for a cause and solution
Thread Starter
CF Veteran
Joined: Oct 2009
Posts: 1,487
Likes: 0
From: Parrish
Year: 1989
Model: Comanche
Engine: 4.0
I dont have the money to pay for anything right now anyway. Its just that I have basically replaced everything already. Except the radiator.
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CF Veteran
Joined: Nov 2009
Posts: 1,671
Likes: 1
From: Northern Vermont
Year: '89
Model: Cherokee
Engine: 242
WOW!!! Alot of hot running XJ's on here...
Mine runs, atleast 30-40 degrees cooler, than all of yours....???
Even on 90+ days...
Oil pressure for mine is at the first 1/4 marking at operating temp.
Mine runs, atleast 30-40 degrees cooler, than all of yours....???
Even on 90+ days...
Oil pressure for mine is at the first 1/4 marking at operating temp.
Thread Starter
CF Veteran
Joined: Oct 2009
Posts: 1,487
Likes: 0
From: Parrish
Year: 1989
Model: Comanche
Engine: 4.0
CF Veteran
Joined: Mar 2009
Posts: 2,287
Likes: 0
From: Westfield, MA
Year: 1999.
Model: Cherokee
Engine: 4.0, I6
what have you upgraded or changed in your cooling system to make it run so cool? cuz wouldnt 30-40 degrees cooler mean your consistantly running about 180-200 tops?
I bet if you took your radiator apart, youd see 80% or more of the coolant rows clogged. Ive seen only 7 or 8 lines that could flow out of near 100 lines(2 core). with the symptoms youve described, rod that radiator out, or get a NEW one. Also the crappy plastic cap on your fill bottle should be checked for tightness.
Junior Member
Joined: Jul 2010
Posts: 53
Likes: 0
From: Sacramento, CA
Year: 1999
Model: Cherokee
Engine: 4.0L
I'm usually crusing around 210 maybe 200, california 100 degree summer in full force right now though. I'll see what fall/winter brings. My oil pressure jumps between 35-45


