Question about 1995 Pontiac Bonneville

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While driving my oil pressure goes up and down. When I am at a stop my oil pressure drops to 0.

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  • preciousHRT Nov 29, 2008

    how to change spark plugs on 1995 bonneville

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THE PROBLEM MAY ALSO BE THE OIL STAINER GOING INTO THE OIL PAN. THE SCREEN MY BE BLOCKED RESTRICTING THE AMOUNT OF BEING PULLED INTO THE ENGINE.

Posted on Aug 06, 2008

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To diagnose this problem we need to remove the oil pressure sending unit, and install a manual gauge. This will give you actual oil pressure, kyour symptoms can be caused by a faulty sending unit, or loose wire connections and such.

Posted on Aug 03, 2008

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1 Answer

WHAT IS THE PROBLEM? I DONT KNOW WHAT TO DO.


Hello Tnelson, I had this happen to my Ford. There was debris in the crankcase. After driving ten minutes, the oil pump pick up tube screen would clog up and restrict the oil going to the oil pump. I drained the oil and poured a half gallon of liquid carburetor cleaner into the crankcase. I let the carburetor cleaner soak for a few hours. I drained the carburetor cleaner and changed oil filter. I installed the correct amount of oil and the low pressure problem was solved.

Nov 09, 2015 | Cars & Trucks

1 Answer

Oil Pressure Drops


Did the mechanic drive the truck with a mechanical gauge to check the pressure ? The engine bearings or oil pump could be worn enough to allow pressure to drop at idle after it warms up.

May 16, 2013 | 1999 Chevrolet Suburban

1 Answer

After about 2 hrs of driving my oil guage on my 2003 sierra goes down to almost 0. I stop and shut the truck off for about 5 min. and the guaga goes back to normal for about 1 hour then the same problem...


A failing oil pressure sensor may be to blame, need to verify the pressure is actually falling to zero with a mechanical gauge. If the pressure on the mechanical gauge does not drop to zero under the same conditions then suspect the pressure sensor. If it is then
I would suspect the oil pump pick up screen is becoming clogged with debris. As mileage accumulates sludge can accumulate in the engine, as bits of it come loose they settle in the oil pan. Extended driving allows it to collect in the pick up screen until it is restricted, upon shutting the engine down the particles drift back to the bottom of the pan. There is also a more remote possiblilty of the bypass valve in the oil pump itself being the culprit, but I think the chance is fairly remote.
Good hunting

Oct 30, 2009 | 2003 GMC Sierra

2 Answers

Come to stop 99 Ram oil pressure drops to 0 check gauges light.


Change the oil! The 318Cu in V8 (5.2 liter) engine has a problem with sludge build up on the oil pump pickup tube screen. This engine requires oil changes at or before 3500 miles with a high detergent oil.

Jul 06, 2009 | 1999 Dodge Ram

1 Answer

The oil pressure gauge keeps dropping down to 0 while i am driving


If you don't hear any ticking or knocking while the pressure gauge drops, the problem is probably a failing "oil pressure sensor". If you do hear a ticking or knocking, the problem is probably a failing "oil pump".

Jun 03, 2009 | 1997 Jeep Grand Cherokee

1 Answer

2002 jeep wrangler oil pressure gauge drops


When the gauge is at 0, is there any noise from the engine (tick, knock etc?) I would have someone put a mechanical gauge on there and read true pressure.Your driving pressure seems OK but if the low number is "real" something is wrong!

May 30, 2009 | 2002 Jeep Wrangler

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