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Oil pressure changes

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Old Feb 8, 2012 | 08:43 PM
  #1  
toddhalbot's Avatar
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From: maquapit lake, NB, Canada
Year: 1999
Model: Cherokee
Engine: 1997 4.0 litre
Default 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?
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Old Feb 8, 2012 | 08:59 PM
  #2  
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From: Raymore, Mo
Year: 1995
Model: Cherokee
Engine: 4.0
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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?
Normal operation. Nothin really to worry about as long as it doesn't go below 15. Pressure spec is 15 to 70 if I remember right. A lot of them vary on throttle/rpm.
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Old Feb 8, 2012 | 09:04 PM
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Drive it. It's fine.
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Old Feb 9, 2012 | 05:58 AM
  #4  
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From: In the middle of Minnesota!
Year: 1999
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Engine: 4.0
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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
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