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Average Coolant Temp and Oil Pressure

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Old Jul 19, 2010 | 02:53 PM
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From: Iowa - DMI
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When my gauges aren't possessed I usually run 35/40PSI on the highway, temp ranges between 210-215 unless it's a hot/humid Iowa day then it creeps up around 220 for a bit and I assume the fan kicks on around here as it jump back down.

My oil gauge, or sensor, is shot though so most of the time I'm "running" 80psi.
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Old Jul 19, 2010 | 03:54 PM
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From: wilkes barre PA.
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my oil pressure is at about 60 at cold start
and in between 30-50 on city highway
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Old Jul 19, 2010 | 04:29 PM
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Originally Posted by Defiance665
I have a old, worn engine. About 20psi hot with 15w40.
Yeah, I run 10w30 full synthetic in mine, and get the same.

Originally Posted by xjdirtbath
Love the mud on the guage cluster!!!!
Oh! you noticed that did ya...
Last edited by XJs-R-us; Jul 19, 2010 at 04:35 PM.
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Old Jul 19, 2010 | 10:16 PM
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From: Whittier, Ca
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I have an 89 4.0. I run about 40psi and my temp is about 200. Is your electric fan working? I used to run hot then I installed a 3 row radiator several years ago and it made a difference. Make sure you have a good mechanical fan and fan clutch along with a good fan shroud. The fan shroud is very important.
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Old Jul 20, 2010 | 12:51 AM
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wish I had gauges. I just have the dummy lights. Never seen the temp or oil light come on so I guess its fine.
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Old Jul 20, 2010 | 04:22 AM
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Originally Posted by AVjeeper
I have an 89 4.0. I run about 40psi and my temp is about 200. Is your electric fan working? I used to run hot then I installed a 3 row radiator several years ago and it made a difference. Make sure you have a good mechanical fan and fan clutch along with a good fan shroud. The fan shroud is very important.

Not trying to be rude or anything....but who are you talking too?

If its me...my cooling system is definitely doing its job.
But I sometimes worry about my oil pressure, since it runs about 20psi when hot....?
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Old Jul 20, 2010 | 04:38 AM
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everybody should also mention if you have the tranny cooler. I've got it.
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Old Jul 20, 2010 | 05:09 AM
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From: Clinton, TN
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Originally Posted by sandaddik2
what radiator/fan set up and im assuming you have a 160 thermostat?
and id assume your driving where its not 100 plus degrees
It's got the standard mechanical fan clutch and the AC condenser fan. The radiator is just the Auto Zone radiator. Yes, it's a 160 thermostat.

Our temps for the last month have been upper 90's. It hasn't hit 100 degrees.
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Old Jul 20, 2010 | 06:15 AM
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Originally Posted by XJs-R-us
Not trying to be rude or anything....but who are you talking too?

If its me...my cooling system is definitely doing its job.
But I sometimes worry about my oil pressure, since it runs about 20psi when hot....?
I am pretty sure he is talking to me. If there is a problem it is the radiator everything else is new and the e-fan is working. I never see a "drop" instantaniously kind of what you guys see its always a really slow cooling after I get off the highway. Is the tranny cooler like the mini radiator infront of the radiator, if so I have it.
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Old Jul 20, 2010 | 11:18 AM
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I ran it in town with the air off quite a bit. It runs about 210 with the air off in town.
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Old Jul 20, 2010 | 02:26 PM
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Originally Posted by tuxfan212
Is the tranny cooler like the mini radiator infront of the radiator, if so I have it.
It sounds like, youre looking at your A/C condenser...

Trans cooler, is like a VERY small, tiny lil, 5"x10" radiator in the corner somewhere.

I have the In-Radiator trans cooler. As most probably do.
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Old Jul 21, 2010 | 02:49 AM
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Originally Posted by XJs-R-us
It sounds like, youre looking at your A/C condenser...

Trans cooler, is like a VERY small, tiny lil, 5"x10" radiator in the corner somewhere.

I have the In-Radiator trans cooler. As most probably do.
That is the tranny fluid pre/heater.
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Old Jul 21, 2010 | 05:59 AM
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Originally Posted by fantic238
That is the tranny fluid pre/heater.
weird really?
lol, never heard of that before...learn something new everyday, I guess.

...still think its weird tho...
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Old Jul 21, 2010 | 06:56 AM
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Originally Posted by XJs-R-us
weird really?
lol, never heard of that before...learn something new everyday, I guess.

...still think its weird tho...
The tranny line passes in the left radiator header so that the fluid can reach operating temperature faster, then it is cooled by the tiny radiator.
When the tranny fluid temperature goes over 210°, the preheater acts like a cooler.
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Old Jul 21, 2010 | 10:58 PM
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Originally Posted by JeepCherokeeTV
LOL I constantly get that little yellow light next to the letter "E". It's not as bad after I seafoamed it though. I used to get like 14 city, 17 highway. now I get like 17 city, 20 highway. And I drive with a lead foot most of the time I like people turning and looking whenever I accelerate at a light hahahaha
I have this...
Last edited by 89Laredo; Oct 19, 2012 at 01:52 AM.
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