Oil pressure changes
02-08-2012, 08:43 PM
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Year: 1999
Model: Cherokee
Engine: 1997 4.0 litre
Oil pressure changes
My oil pressure is slightly lower than normal(normal being right at the middle of the gauge) and slightly higher than normal when I give it gas. Is this bad, cause it hasn't always been this way. And what does it mean?
02-08-2012, 08:59 PM
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Year: 1995
Model: Cherokee
Engine: 4.0
Originally Posted by toddhalbot
My oil pressure is slightly lower than normal(normal being right at the middle of the gauge) and slightly higher than normal when I give it gas. Is this bad, cause it hasn't always been this way. And what does it mean?
02-09-2012, 05:58 AM
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Year: 1999
Model: Cherokee
Engine: 4.0
Oil pressure spec for the Jeep 4.0 is as follows. If you are in this range, you are fine.
*Not less than 13 psi at HOT idle
*Between 37-75 psi OVER 1600 rpms
*Not less than 13 psi at HOT idle
*Between 37-75 psi OVER 1600 rpms
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