Question about 1994 Chevrolet C1500
I would check the IAC or idle air control valve located in the throttle body of the engine. It looks like a big nut with black plastic in center and a wire on it. They get gummed up with carbon and become erratic remove and spray with carb cleaner. hope this helps please rate me
Posted on Jan 12, 2009
I would pull the air filter cover while it's running and verify the fuel is not leaking around the fuel injector pods. I have had the same problem. The tork screws which hold the pod cover will loosen. Causing fuel to be released into the throttle body. Only affects a warm engine at idle. Plus terrible fuel mileage.
Posted on Jun 18, 2009
Hello. I have the same problem with my 2002 Chevy Trailblazer. I took it to the dealership the first time because it sounded like an airplane was taking off in the engine. They changed the fan clutch and that stopped that problem. However, I'm now dealing with the stalling and truck going dead at stop lights. I took it to the dealership AGAIN and they said it was the THROTTLE BODY that needed to be cleaned out...WRONG! I'm still having the same problem with it stalling and stopping. I'm pretty sure it has something to do with the fuel injector or something of that nature. I even went to a higher octane fuel and put gas treatment in my truck which helped for a couple days but now it's back to it's old ways. So many people are getting on here and saying it's the throttle body but I can tell you that was not my problem. I'm taking it back to the dealership next week sometime and will know more then.
Posted on Apr 09, 2009
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Posted on Jan 02, 2017
SOURCE: rough idle then stalls
Vacume leak or bad idle motor. With the car in park and running with the hood open listen for leaks moving your hand around the different hoses looking for a change in the sounds that you hear. The idel motor also makes the car idel up to 1500 RPM or so right at start-up then idel down, If it doesn;t the idel motor is likly. Check engine light is on when running? Test for codes, Follow code test charts don't skip any steps!.
Posted on Nov 02, 2009
Testimonial: "Found the problem vacume leak like you said."
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