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1999 Jeep Laredo oil pressure

Tiny
SAUYUEN
  • MEMBER
  • 1999 JEEP GRAND CHEROKEE LAREDO
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 92,000 MILES
I have a 1999 jeep grand cherokee laredo with a inline 6 4.0L, I started to have a high oil pressure indication, its pegging out at over 70psi when running and 60psi at idle, use to be at around 50psi at idle and 60psi when running, I changed the oil and filter and no change, also my overhead computer indicator for my mile per gal. Seems to reading off/high then it use to be at around the same time that I noted the high oil pressure, there is no other indication that the car is not running correctly.
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Sunday, September 14th, 2008 AT 11:10 PM

1 Reply

Tiny
MHPAUTOS
  • MECHANIC
  • 31,938 POSTS
Hi there,

check the oil pressure with a master gauge this will give a true indication as to the oil pressure, if the pressure is OK, the problem will be electrical. Start here.

Mark (mhpautos)
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Sunday, September 14th, 2008 AT 11:14 PM

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