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If it is full of oil and the oil pressure light is not on. I would drive it. This engine also has a oil level sensor that may be bad making the light to be on. 10w30 is ok but always put in what it calls for next time.
ususally in the fuse block on the engine conpartment, youll see it. or it deffirence like in 3 years on models there running loose by the firewall. hope this helps
For 1994 Pontiac Grand Am 2.3L MFI
SOHC Quad 4cyl The Oil Pressure Switch is located:
Under hood, driver side, front engine area, below
cylinder head, where engine meets transaxle housing
mounted in block.
Remove the crank sensor and test the resistance between the two pins. You may find you won't have any, meaning the internal circuit is broken. If you have a very low resistance (usually under 200 ohms) then it is shorted and the PCM won't be able to read it. I also just fixed a car with this issue where the CPS sensor simply came unplugged.
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