oil pressure
Thread Starter
Seasoned Member
Joined: Sep 2011
Posts: 474
Likes: 0
From: segoville tx
Year: 1997
Model: Cherokee
Engine: 4.0 6 cylinder
Driving today and my oil pressure is bouncing around like crazy and i did a fresh oil chsnge the other day... any suggestions
Senior Member
Joined: Jan 2012
Posts: 635
Likes: 2
From: Indiana
Year: 1999
Model: Cherokee
Engine: 4.0
The o ly way to be 100% that your dash gauge is correct is to perform a pressure test with an analog gauge. The sending unit is notorious at being a pile if crap that is inaccurate. Example: my 98 reads about 15-20 all the time no matter what. Testing with a manual gauge no problems at all. Good luck
Senior Member
Joined: Jun 2012
Posts: 595
Likes: 0
From: Rome, GA
Year: 1990
Model: Cherokee
Engine: 4.0
I don't know if this applies to a later model but, I changed the oil on my RENIX shortly after buying it and my oil pressure was all over the place afterward. It turned out to be the sending unit next to the oil filter. I replaced that and it's back to normal now.
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
My money is on the fact that the sending unit got disturbed during the oil filter change.
But, gotta ask. What brand oil filter did you use?
But, gotta ask. What brand oil filter did you use?
Thread Starter
Seasoned Member
Joined: Sep 2011
Posts: 474
Likes: 0
From: segoville tx
Year: 1997
Model: Cherokee
Engine: 4.0 6 cylinder
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
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Thread Starter
Seasoned Member
Joined: Sep 2011
Posts: 474
Likes: 0
From: segoville tx
Year: 1997
Model: Cherokee
Engine: 4.0 6 cylinder
Thread Starter
Seasoned Member
Joined: Sep 2011
Posts: 474
Likes: 0
From: segoville tx
Year: 1997
Model: Cherokee
Engine: 4.0 6 cylinder


