2001 Cherokee Oil pressure gauge

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jmcgill - 29 Aug 2006 11:55 GMT

On my 2001 Jeep Cherokee 4.0L, I have noticed that my oil pressure
gauge is not consistent. When I first start up, it reads right in the
middle, or to the right of middle, but as the engine warms, and I'm at
low RPMs, the pressure seems to plummet, and the gauge shows about 20
PSI. When I am moving again, it's right back up in the middle.

Is it a problem with the sending unit, or something much worse? The
engine has 58,600 miles on it, and this engine is known for high
mileage capability.....

Any help is appreciated,

Joe

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philthy - 29 Aug 2006 23:59 GMT

first thnig to check is the pressure with a mechanical guage.this will
tell you if a oil pump issue is starting to occur then you can go from
there on a oil pressure sensor
min. spec for the 4.0 is 10 psi hot idle

> On my 2001 Jeep Cherokee 4.0L, I have noticed that my oil pressure
> gauge is not consistent. When I first start up, it reads right in the
[quoted text clipped - 9 lines]
>
> Joe

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