The classic Jeep Cherokee XJ was built from 1984 through 2001 and is a favorite among many Jeep enthusiasts. Though it is known for its durability and long lifespan, it was not without its faults. Among these is the notoriously unreliable oil pressure sending unit.
The oil pressure sending unit -- the sensor -- used on 1984-2001 Jeep Cherokee models commonly fails. Usually, the result is a continually high reading, "pegged out" at 80 psi or more.
The simplest way to determine if a faulty sensor is causing high oil pressure readings is to replace the sensor. The job is not too difficult for the amateur home mechanic.
Have It Checked
If you aren't comfortable replacing the oil pressure sensor yourself, or if you have done so and still get abnormally high pressure readings, have the vehicle's oil system checked professionally.
- "Jeep Cherokee 1984 thru 2001"; Henderson, B., and Haynes, J.; 2005
- Photo Credit brake lights close-up image by Kathy Burns from Fotolia.com
Jeep Grand Cherokee Oil Pressure Problems
Oil pressure problems are common in the Jeep Grand Cherokee, especially in older models that are starting to rack up the miles....
Jeep Wrangler Oil Pressure Problems
In 1987 AMC introduced the Jeep Wrangler to replace the older CJ series. In 1988 Chrysler bought the Jeep line and continues...
How to Change the Rear Brakes on a Pontiac Grand Prix
Brake pads are an important part of your Pontiac Grand Prix's braking system. They are the replaceable friction pads that pinch the...
How to Replace an Oil Pressure Sending Unit in a Cherokee
The oil pressure sending unit for the Jeep Cherokee is located on the side of the block near the oil filter. The...
How to Replace an Oil Pressure Switch in a Jeep Liberty
If the oil pressure light or gauge in your Jeep Liberty is not working or showing an erratic reading, changing the oil...
How to Replace the CKP Sensor on a 1999 Jeep Grand Cherokee
The 1999 Jeep Grand Cherokee features a crankshaft position sensor, or "CKP," which monitors the speed at which the engine's crankshaft rotates...
How to Change Headlights on a 2001 Jeep Grand Cherokee Laredo
Replacing the headlights in a 2001 Jeep Grand Cherokee is a great way to ensure that you have the best visibility possible...
How to Check the VTEC Oil Pressure Switch
The oil pressure switch in your vehicle measures the integrity of the engine's lubrication system -- it warns you when it detects...