Questions & Answers for: Chevrolet C1500 iac sensor

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...iac valve, after few months another one. then,the problem came back later. this time I just cleaned the valve and the truck ran just fine. The problem continued but I learned by accident that ...

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...air control) valve and the TPS(throttle position sensor) first. I would start with the IAC on the 93'. IAC would be were I would start as well. This was a problem for us when doing propane ...

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Question about 1993 C1500

1 Answer

...with 4.3 engine. 1991 its computer controlled. If its doesnt idle at the correct speed, theres a problem have it checked, could be a tps( throttle position sensor) or iac (Idle air control) ...

sensor. Low compression Big vacuum leak. Weak ignition IAC stuck a little open. TPS that is saying your foot is on the gas when it is not. EGR stuck open a little. Too low an idle Weak spark plugs Bad

...sensor, egr valve, and iac valve. still have got nowhere... HI, You may have some carbon build up in the throat of the throttle body itself. That buildup may also have plugged a small air hole in the ...

Question about 1993 C1500

2 Answers

...iac sensors new 6 months ago. It could be the temp sensor switch. Fuel injected engines (most GM models) use the temp sensor as the choke sensor as well. I had a Buick that did the same thing and ...

confused help,love the truck,runs rich i can smell it. TPS probably not cause surging idle. Could be IAC motor, could be MAF sensor. If you dont have a check engine light I would be thinking IAC motor

Question about 1993 C1500

1 Answer

...IAC--good ECM--? Injector(s)--? Thanks If it has a Mass Airflow sensor unplug it and see how it runs. If it smoothes out that is the problem. I would also check for vacuum leaks the base of the ...

1991 chevy c1500 surging and stalling replaced iac valve, tps,egr,pcv,fuel filter,map sensor,temp sensor and throttle body gasket What happens if you unplug the O2 sensor?

Question about 1990 C1500

2 Answers

...iac, fuel pressure 11 lbs,scanners only shows running lean. can anyone help ? Have you checked/replaced the O2 sensor(s). They produce the data that your computer reads. Bad/clogged O2 sensors will ...

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