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Old 09-06-2015, 05:00 PM
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Oil pressure

I have a 95 with the 2.5 5 speed. My oil pressure pegs the gage, is it really running 80 psi or what?

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Old 09-06-2015, 05:18 PM   #2
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i doubt that.....

cold start should be around 40-50 psi and it will drop a bit when it warms up at idle. throttle up and it will increase a little.
i don't think you gauge is working.
i have a 360 in my YJ and it reads about 55-60 lbs. at startup and once it warms up at idle i'm at about 20 lbs. granted, my engine has some miles on it so......

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Old 09-06-2015, 06:23 PM   #3
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Originally Posted by Marksyj View Post
I have a 95 with the 2.5 5 speed. My oil pressure pegs the gage, is it really running 80 psi or what?
My 91 2.5 will run about 55 psi(max) when cold (winter). It stays around 45-50 when warm, regardless of outside temp. I would change the oil sender and see what happens. New sender is only $20 or so.
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Old 09-06-2015, 08:59 PM
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My 91 2.5 will run about 55 psi(max) when cold (winter). It stays around 45-50 when warm, regardless of outside temp. I would change the oil sender and see what happens. New sender is only $20 or so.
I replaced my sending unit and it didn't change maybe I should hook up a mechanical gauge and go from there.
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Old 09-07-2015, 12:51 PM   #5
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If you have never cleaned the circuit board and contacts behind the gauge cluster, I would try that before replacing the gauge. It's not hard to do, just a bit time consuming. Once you remove the plastic dash pieces, the circuit board pulls out after removing some screws. Unplug it and then carefully remove the gauges. Use a pencil eraser to clean the contacts. This helped mine although I ended up buying a new circuit board from Morris 4x4 (about $90) because I felt better having a new one than a 25 year old one. This is what it looks like from the back (mine is a 90 so has the clock in the middle):
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Old 09-07-2015, 07:59 PM
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If you have never cleaned the circuit board and contacts behind the gauge cluster, I would try that before replacing the gauge. It's not hard to do, just a bit time consuming. Once you remove the plastic dash pieces, the circuit board pulls out after removing some screws. Unplug it and then carefully remove the gauges. Use a pencil eraser to clean the contacts. This helped mine although I ended up buying a new circuit board from Morris 4x4 (about $90) because I felt better having a new one than a 25 year old one. This is what it looks like from the back (mine is a 90 so has the clock in the middle):
thanks cindib I'll give that a try, good excuse to go led on the dash lights at the same time 😉
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Old 09-07-2015, 08:18 PM   #7
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My mechanic informed me that at operating temp, it is at 2-5 psi. at cold would be around 40 psi. That threw me for a loop...All is good though.
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Old 09-08-2015, 11:58 PM   #8
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thanks cindib I'll give that a try, good excuse to go led on the dash lights at the same time dde09
Yeah, I did that too. It's incredible how much brighter they are. Tip: make sure they work before you put everything back together, the LEDs are polarized, so if they don't work, reverse them in the slot. Don't ask me how I know this lol
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Old 09-09-2015, 09:14 AM
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Yeah, I did that too. It's incredible how much brighter they are. Tip: make sure they work before you put everything back together, the LEDs are polarized, so if they don't work, reverse them in the slot. Don't ask me how I know this lol
oh I figured that out the hard way lol

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