What is the normal oil pressure? - JeepForum.com

 
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post #1 of 6 Old 06-14-2011, 06:34 PM Thread Starter
Badcompany
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What is the normal oil pressure?

I was to curious to know what the normal oil pressure should be for the 4.0. My oil pressure at idle is at the line between o and 40. While driving my pressure is at 40 to 45. Is this normal or there a serious problem going on here? I changed my oil switch. I just wanted to know if this is normal or not. Thank you.

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post #2 of 6 Old 06-14-2011, 06:39 PM
chris142
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Put a mechanical gauge on it and get back to us.
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post #3 of 6 Old 06-14-2011, 06:39 PM
durango-bob
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Zero can be a problem, but otherwise sounds about right.
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post #4 of 6 Old 06-14-2011, 06:52 PM
Robert J. yates
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13psi at idle is factory spec. Your guage may not be correct or else the oil pressure sender is possibly fragged and needs to be replaced. If you truely had zero... you would get a check guages light.

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post #5 of 6 Old 06-14-2011, 06:52 PM
SolidBrass
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10 @ 1000 RPM is normal. Nothing to worry about. (Zero is a problem) Jeeps have an 'honest' gauge that tells you what really is happening. Other vehicles don't and just tell you 'everything's fine' all the time to keep know-nothings from getting worried, in truth oil pressure changes with RPM's.

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post #6 of 6 Old 06-14-2011, 07:08 PM Thread Starter
Badcompany
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Thanks for the replies. I will have to pick up a mechanical gauge to test the true pressure since the gauge in the jeep is digital. It's my first jeep, just use to those v8's.
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