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Matt C.
Matt C., ASE Certified Technician
Category: Jeep
Satisfied Customers: 41
Experience:  Master Automotive Technician
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Why would the check gauges lite come on and the oil pressure

Customer Question

why would the check gauges lite come on and the oil pressure gauge not work after changing the spark plugs on a 2004 jeep gc special edition?
Submitted: 1 year ago.
Category: Jeep
Expert:  Matt C. replied 1 year ago.

Hello, is this on a 6 or 8 cylinder?

Expert:  Matt C. replied 1 year ago.

If there is a problem with the oil pressure sending unit than it would cause the "check gauges" light to illuminate. Verify that the connector is firmly connected to the sensor which is located to the left of the oil filter. If it is still has a good connection I would recommend replacing the oil pressure sending unit, this is a fairly common problem on the Grand Cherokee's.

Expert:  Matt C. replied 1 year ago.

Here is a picture showing the location.

Expert:  Matt C. replied 1 year ago.

Just checking up to see if my answer helped at all. Please don't forget to rate if I successfully answered your question.