1992 Jeep Cherokee oil pressure

1992 JEEP CHEROKEE
122,000 MILES • 6 CYL • 4WD • AUTOMATIC
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SUNNY06
  • MEMBER
  • 1 POST
just bought with 35k on rebuilt
oil pressure fine on start up (40), then drops to 20 when warm
when driving for long periods of time will go to or near 0, unless i rev it , then it goes up to 20

bad sender? bad oil pump? too thin of oil (10w30 royal purple)? worn bearings?
Mar 18, 2010 at 6:36 AM
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TOOOMANYTOYS
  • ✓Experienced Mechanic
  • 513 POSTS
I would hook a manual pressure gauge to the engine to see acurate oil pressure. If the oil pressure is still low you may want to pull the oil pan check the bearings if ok try a high volume oil pump.
Mar 18, 2010 at 6:46 AM
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