Confused on oil pressure

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05-25-2013, 10:54 AM

#16

cruiser54

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Year: 1990

Model: Cherokee (XJ)

Engine: 4.0

Quote:

Originally Posted by Sparkys92XJ

I have a 92 5 speed with a crate motor with about 25k miles and mine runs the same way. 40 at idle and I a ill higher when driving. I've seen it shoot up around 60 before. So there's nothing to worry about! Low pressure is what you want to keep your eye on.

That's real nice for you sparky. But, the OP has something going on that ain't right.

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05-25-2013, 11:06 AM

#17

Sparkys92XJ

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Year: 1992

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Quote:

Originally Posted by cruiser54

That's real nice for you sparky. But, the OP has something going on that ain't right.

What does he have that's going wrong? He said that at idle his oil pressure is at 40. It was a general question on if it were normal.

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05-25-2013, 11:07 AM

#18

Sparkys92XJ

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Year: 1992

Model: Cherokee

Engine: 4.0

Quote:

Originally Posted by worleyburd

So I came across some threads of people talking about their oil pressure. Well I have a 92 5 speed 4.0 HO
And my pressure stays about 40 at idle. People are saying it should be 10. Is that right or has my jeep just been messed up since I got it haha.

See ^^^^^ original post

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05-25-2013, 11:15 AM

#19

cruiser54

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Quote:

Originally Posted by Sparkys92XJ

See ^^^^^ original post

Sorry. Thought the OP said 100 PSI with factory and aftermarket gauge.

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05-25-2013, 11:22 AM

#20

mitch500

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After fully warmed up hot idle sits at about 30 and cruising speeds it's exactly in the middle at 40.

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06-10-2013, 05:46 PM

#21

Buckeye

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Mine was sitting around 40 most of the time, but recently it goes up to around 50 when on the highway. Is there any reason for concern?

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06-10-2013, 06:27 PM

#22

salad

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Completely normal. Oil pressure increases with engine load and RPM

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06-10-2013, 09:46 PM

#23

jebmccall

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Year: 1997

Model: Cherokee

Engine: 4.0

dont forget to factor in engine temp and outside air temp will mess with oil psi slightly... in the winter at 2000 rpms my oil psi stays at 50, during the summer its at 43 psi.

100 psi of oil psi is way too high though. have you verified it with a mechanical gauge? if so you defnitly have an issue.