Question about 2002 Jeep Grand Cherokee
A low oil level will cause this. If the oil level is fine, then you need to have a mechanical gauge to verify the pressure is really low and that you don't have a bad oil pressure switch. You could try replacing the switch first if you don't want to put an oil pressure gauge in the vehicle. If the pressure is indeed low and the oil level is normal then replace the oil filter to see if that brings the pressure back up. If the pressure is still low, remove the oil pan to check the pick-up tube for debris. If it is clear of debris then you'll be needing to replace the oil pump. Another possible cause of low pressure is a damaged rod or main bearing and would require the engine to be rebuilt.
Posted on Jul 18, 2011
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Posted on Jan 02, 2017
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