Have codes h31, h33, h35, h37 HELP
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Joined: Dec 2009
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From: bradenton Fl
Have codes h31, h33, h35, h37 HELP
The sys light on dash started flashing on 95 lt1 auto, pulled the codes and got h31,h33,h35, and h37. I dont see the 31,35 or 37 codes on my list. code h35 is "MAP sensor signal voltage was too low (high vacuum) when engine speed was under 700 RPM, or when TPS was greater than 20% with an engine speed above 700 RPM."
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