Having problems with your 2002 Jeep Grand Cherokee ?

I have a 2002 Jeep Grand Cherokee Laredo. When I go above 30 ish it starts to whine, but if I turn off the overdrive, the sound goes away. What could this be? Also just recently my oil gauge is really close to the H when driving. I had an oil change done yesterday and it still is close to the H, any ideas on this?

Posted / edited by AnonymousUser on : 08-08-2022

Answers :

Check the level of the differentials, transmission and transfer case. any of those if low can cause a whine...hopefully if low you haven't sustained any major damage. Could also be an internal converter problem.
As for the oil pressure being high, you may have a sticking pressure relief or the wrong oil filter installed. Check the filter number and make sure it gets warm (if not oil isn't going through it) and you can add some marvel oil to the engine which will often clear up any internal valving problems. Could also be a bad sending unit....only way to know that is to either replace it or have an external test gauge installed and read the actual pressure.
Repair Help & Product Troubleshooting for 2002 Jeep Grand Cherokee

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