Question about 1990 Geo Prizm

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Oil pressure light comes on 1990 geo prizem

Oil light comes on at idel change oil did not help drove car for 2 to 3 days now light dose not come on any one else have this hapen to them

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Sounds like the oil pressure sending unit is on it's way out. I hope this helps. Take care and God Bless.

Posted on Jan 25, 2009

  • Bryon Agin Jan 27, 2009

    Was it the oil pressure sending unit? I'm still here if you need me.




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Trish-if the engine is warm and/or the car has been driven, you should check the oil level after it has been shut down and sits for 5 minutes. If the level is good (within one quart of being full), you need to at the very least change the oil and try to go with a higher viscosity oil. For instance, if you are using 5w-30, get 10w-40 instead. You do not mention how long it has been since you had the oiol changed, what car/year/engine, and this information should be updated so that you can be assisted more thoroughly. If the light is on 'steady' (not flickering) and the engine seems quiet and smooth, it could be a disconnected sender unit or a defective sender unit-get back here if you can and try providing more information.

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