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TheStreet16 03-08-2012 01:35 AM

Oil Pressure Drop
2000 4.0 GC. My normal oil pressure hangs out around 65 but for the past few days every now and then when I stop at a red light or coast for a while, the oil pressure gauge will drop down to 55 or so. Once I start to accelerate, the pressure starts to rise until finally reaches the normal level.

Does this just happen or is there a reason?

2005JGC 03-08-2012 02:20 AM

Re: Oil Pressure Drop
I didnt look at specs before this response but 55 psi at warm idle is very healthy

TheStreet16 03-08-2012 11:28 AM

Re: Oil Pressure Drop
my bad i posted off the top of my head. my jeep normally sits at about ~50 and drops down to ~30.

01grand 03-08-2012 08:05 PM

Once warm my old 4.0 would run at those specs once warm, it did have over 200,000 miles on it though.

2005JGC 03-09-2012 01:09 AM

Re: Oil Pressure Drop
yeah even thirty is decent, again without looking at the specs, typicall chryslers specs are "above 5psi @ idle or above X @ 1500 rpm, the minimum specs are MINIMUM specs, when your reaching the minimum specs there are some problems, but 30psi is healthy.

TheStreet16 03-09-2012 03:58 PM

Re: Oil Pressure Drop
Okay. I just wanted to check. I thought it was within the normal range but thought they sudden decrease and increase were a little odd.

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