Oil Pressure Knowledge needed
02-17-2010, 03:29 PM
#1
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Location: PA
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Year: 90
Model: Cherokee
Engine: 4.0
Oil Pressure Knowledge needed
The other day my oil pressure was reading 40 lb. @ idle and then going to around 60 lb. under load. I went to go somewhere and the pressure is now reading 60 lb. and 80 lb. under load. I replaced the sensor about 2 months ago and have no issues until yesterday. Any clue on what the issue can be. I don't want to have the engine going boom on me...
02-17-2010, 03:47 PM
#2
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Year: 1992
Model: Cherokee
Engine: 4.0
I would hook up a manual gauge and check it.. if it shows its that high.. then oil pressure relife valve is stuck...
Last edited by Hommersimpson; 02-17-2010 at 03:50 PM.
02-19-2010, 09:51 AM
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Year: 90
Model: Cherokee
Engine: 4.0
Can anyone tell me what is involved with replacing the oil pump. i went to my local garage the other day and they told me $856.00 to replace the oil pump. that sounds ridiculous!!!!!! They said the book calls for 6 hrs of labor. Its a '90 cherokee limited with a 4.0. Any hints would be great....
02-19-2010, 09:53 AM
#6
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Year: 1998
Model: Cherokee
Engine: 4.0
ya jack it up and let the AXLE hang and pull the pan out......if your doing the Oil pump be sure to do the RMS and a new OP gasket also....but the job isnt hard.
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