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Ron Z.
Ron Z., - Jeep Tech -
Category: Jeep
Satisfied Customers: 17777
Experience:  18+yrs experience. State Inspector & Jeep Diagnostics/Repair
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I have a 2002 jeep grand cherokee and the oil pressure gauge

Resolved Question:

I have a 2002 jeep grand cherokee and the oil pressure gauge is pegged at high when the switch is turned on but the engine isn't. The needle stays pegged when the engine is turned on. What can I do?
Submitted: 6 years ago.
Category: Jeep
Expert:  Ron Z. replied 6 years ago.


Can you give me engine size?


Customer: replied 6 years ago.
4 L
Expert:  Ron Z. replied 6 years ago.


One more quick question- When you turn the key off, does the needle move back down?


Customer: replied 6 years ago.
Expert:  Ron Z. replied 6 years ago.


Ok. It sounds like you are going to have a faulty Oil Pressure Sensor. This sensor reports to the instrument panel as soon as electricity is given to it, doesn't matter if the engine is running or not. I believe replacing this sensor should solve the problem.


Customer: replied 6 years ago.

can you give me a part number?

Expert:  Ron Z. replied 6 years ago.


Hmmm... for some reason, i do not get an OEM part number listing... that's odd. At any rate, it's actually a pretty common fail item on the 4.0 (i actually just did one about 2 weeks ago) and is readily available at any local parts store. I had NAPA deliver mine, it was in stock.



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