2000 Jeep Grand Cherokee Maintenance Question

A few days ago I noticed my oil pressure was getting high....it would start up at about 70 psi and ride at almost 80 psi no matter how fast or slow I was driving....80 is the Max so I was a little worried. I took it to a local Mobil 1 lube...they changed my oil filter but my pressure is still high! I have no lights that come on to tell me something is wrong and I truck seems to drive and run just fine so I am very unsure....can u help me with any ideas please!!

Posted Feb 26th by Kim the owner of a Jeep Grand Cherokee high oil pressure, oil change, filter, jeep grand cherokee

Answers from the Automotive Experts

Kim, Thank You for writing into AskPatty!! By your description, you may be looking at a a possible gauge or transducer failure. High oil pressure could be indicative of a restriction by particles in the oil pick up screen off your oil pump, I would have a technician rule out all possibilities BEFORE a pick-up screen inspection. Hope this Helps!! A. J. Valle

⟩ Answered on Feb 27th, 2012 by Amanda J. Pierce, MBA "AJ", Certified Mechanic at VIGOR Alaska Industrial Shipyard

Kim, At first I agreed with you that this might indicate a something was wrong, but after discussing with our technicians, they concluded that there was o real reason for concern. "You may need a new oil pressure sending unit. The proper way to determine this is to perform a oil pressure test with a mechanical gauge. However, if by the slim chance your oil pressure is too high, that would likely be caused by a jammed up pressure relief valve on the oil pump itself ( not a likely scenario)". I hope this helps! Thanks for your question.

⟩ Answered on Feb 27th, 2012 by Judy Curry, Co-Founder and Vice President of Marketing at Currys Auto Service

It could be either a bad code from a malfunctioning gauge or from the oil pressure transmitter or most likely there is a lodged relief valve on the oil pump.

⟩ Answered on Feb 27th, 2012 by Kerri Papajohn, Marketing Director at USA Sealants, Inc.

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