Question about 2006 GMC Envoy

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How do i tell if i have a bad oil pump or a bad oil sensor

I keep getting warning lights that say shut off engine

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If oil level in engine is at proper level, I wouild suspect oil pressure sending unit, does vehicle have an oil psi gauge on dash,,,if so what does it read. if oil psi reads well then it may be an oil level sensor. if you have access to a manual oil pressure gauge, you can remove the oil psi sensor and install manual gauge to get a true reading of what oil pressure is while running. if manual gauges shows low psi, then you may be looking at an oil pump.

DW Mylin

Posted on Nov 27, 2012

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Posted on Jan 02, 2017

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SOURCE: oil sensor buzer/light will not shut off 96 cabiro VW

I had the exact same problem with my '96 Cabrio, it was a cylinder that was stuck open slightly allowing oil to go from the engine to the pan that made the sensor think there was something much worse wrong with the engine. They were able to fix it. That noise the oil light makes is very loud.

Posted on Oct 28, 2008

  • 55 Answers

SOURCE: Oil sensor

The oil light on your car has nothing to do with oil level in the crankcase but rather oil pressure. The oil pressure switch/sensor is located on the rear of the engine block above the right axle I believe. Unless you have engine noise or suspect low oil pressure, I'd replace it but you could check oil pressure for peace of mind with an pressure gauge if you wish. You may need a special socket to replace it.

Posted on Oct 18, 2008

  • 1 Answer

SOURCE: check engine light/fuel temp sensor

for fuel temperature sensor vehicle has it inside the gas tank atach to fuel pump and yes it has one . they will need to take out gas tank and get fuel pump out and get sensor .

Posted on Sep 13, 2008

  • 5 Answers

SOURCE: very bad oil leak around oil pump, very low oil pressure

it may not have sealed be sure to put oil on ring of the pump and tighten it all the way thin slightly twist it back so the pump an seal instead of squeezed together

Posted on Apr 18, 2009

  • 7353 Answers

SOURCE: BMW 318iSE (1999) engine warning light

That sounds like you bought big problems. Oil ights indicate low oil pressure= BIG BUCKS. I would have a qualified repair shop check it out, A shop that specializes in BMW. If you are lucky, maybe the oil sender is just bad. They can also check out the Ck eng light. But the oil light is priority one.

Posted on Nov 05, 2009

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When the oil pressure drops, the power for the fuel pump is cut for safety reasons. You would not want the fuel pump to keep going if you were in a wreck and the engine stopped but the key switch was still on.
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In THIS LINK could find additional interesting information about TDI FAQ.

Regarding warning lights:
- if the coolant temp light comes on, shut off the engine ASAP
- if the oil warning light comes on, shut off the engine ASAP
- if a falshign MIL/CEL comes on, shut off the engine ASAP

ASAP means driving to the berm of the highway right now and not waiting for the next exit. But if the MIL/CEL is not flashing, then it's not an urgent indicator.

Its possible that one simple unplug or any bad signal sensor. Are you recently make any mechanical job there?

Keep us updated.

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1 Answer

Oil light flashing and dinging at a stand still even though oil is topped off. When we accellerate it stops dinging and the warning light goes away.


May be the oil pressure sensor is bad, but i think it is worn or damaged oil pump.. Try to replace the sensor, if no change, then the pump or all the engine is bad - so replace or rebuild it..

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