Question about 1992 Pontiac Bonneville

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1992 BONNENILLE OIL PRESSURE READS PAST TOP GAUGE PRESSURE

THIS IS AT OPERATING SPEED AT IDLE SPEED SAY AT RED LIGHT IT READS NORMAL PRESSURE . WHAT IS THE REASON AT OPERATING SPEED THAT IT PEGS OUT OVER 8O PSI I GUESS YOU CALL IT. THANKS

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  • Pontiac Master
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Sounds like the pump pressure relief is gummed up or faulty. Try putting in a quart of marvel oil. If it does not get better in a couple of days, you may need to take the pump out and check it. Depending upon what engine you have, some have the pump located in the timing case cover...on those it maybe possible to remove and clean the relief. Get a manual and check to see where yours is located.
Avoid high rpm running while you have this problem as your oil filter can split open and you will quickly loose your engine oil.

Posted on Sep 03, 2009

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