Oil Pressure - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 10-27-2006, 12:15 PM   #1
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Default Oil Pressure

I changed the oil in my car about 1000 miles ago with 10W30 Valvoline. I put a FRAM filter on it when I replaced the oil (You can flog me for this later.....) I checked the oil this morning and it is full.

The oil pressure at idle has been acting funny lately. Sometimes it will read at or slightly above 100 PSI (It did it 3 times on a 5 mile trip yesterday). Before changing the oil, it was usually around 40 PSI at idle, and occasionally now it will get back down to 40 PSI at idle. When the car is going down the street, it is always at 50-70PSI (And usually it is right at 60).

Is this normal? I'm a little concerned about how high the pressure has been getting.
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Old 10-27-2006, 12:41 PM   #2
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Two things. Fram is absolutely the worst filter you can use. Check www.bobistheoilguy.com for details.

High variable intermittent pressure is usually a faulty oil pressure sender. You can change it easily by removing the RF wheel and wheelwell plastic liner/skirt. You'll see it on the back side of the block above the oil filter adapter plate.
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Old 10-27-2006, 12:52 PM   #3
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Thanks. The oil pressure is pretty constant when I'm going down the street. I'll go ahead and work on replacing the oil pressure sending unit, and while I'm at it, I'll get the FRAM filter off of it.
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Old 10-27-2006, 04:32 PM   #4
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Pick up a delco filter, or NAPA gold
them usually are gooders
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