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Ron Z.
Ron Z., - Jeep Tech -
Category: Jeep
Satisfied Customers: 18557
Experience:  18+yrs experience. State Inspector & Jeep Diagnostics/Repair
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Where is the oil pressure switch on a 1999 jeep gr. cher. lar.

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where is the oil pressure switch on a 1999 jeep gr. cher. lar. 4x4/4.0L/6 cyl. I cannot find it for the life of not a mechanic, but it should be fairly obvious, no?!!!


The oil pressure sensor is on the passenger's side, above the starter towards the rear of the engine next to bell housing.


Customer: replied 7 years ago.
..thats with the entire assembly?...the gauge and connector?


This is just a sensor. It has a 3-wire connector going to it (violet/whit, grey/yellow, black/lt. blue), this sensor sends a signal that registers on the gauge on the dash.


Customer: replied 7 years ago.
the replacement i bought also has the gauge that screws into the engine?
Customer: replied 7 years ago.
..what i mean is, it is the electrical connector on top of some kind of round, threaded thing


No. I believe you have the wrong part. From what you describe, you've got the sensor for an "idiot light" and not a "gauge". The OEM part# XXXXX: 56028807AB - take that to the parts store and have them "cross over" this number to aftermarket.



Customer: replied 7 years ago.
can i use that part?its the only thing that shows up on rock auto catalog and gauge is malfuctioning, i thinkg..low psi...and the idiot check gauges light comes on


Thats a very common problem with Jeep. I just did one on a 2004 G/C. Usually is the Oil Pressure Sensor. However, no, these 2 sensors are not interchangable. Try a "better" parts store, like NAPA. Those guys at AutoZone really don't know their stuff to well. Like i say, bring the OEM# XXXXX you, and most places can just "cross over" this number to the applicable after market part.


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