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Nightmare emissions! 200 1989

That code is for the loss of signal from the O2 sensor you might clean the electrical connectors, clear the codes and see if they come back.

Pull a spark plug is it wet or sooty (rich).
Smell the vacuum hose from the fuel pressure regulator, gas odor?
Place a screw driver on each injector with the handle up to your head, do you hear injectors clicking?

Dan






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