Rough idle , stalls when let off gas

20

Asked by Nickolas361 Feb 03, 2021 at 08:45 AM about the 2001 Chevrolet Silverado 1500 LS RWD

Question type: Maintenance & Repair

2 Answers
20

Nickolas361 answered 3 years ago

Hi I have a Chevy single cab 5.3 that won’t start and I can’t seem to find out why it’s starts but immediately starts running rough if I don’t touch the gas it’ll stay on for about 45 sec and stall on its own I can press the gas and it’ll also keep running but as soon as I let off the gas it stall I replaced the fuel pump , fuel filter , iac , tps, crank sensor, new wires new ngk spark plugs ?? Can anyone help me out

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exCompaqr answered 3 years ago

Did you clean the throttle "butterfly" valve? It may be stuck and not rotating "properly" due to being "gummed-up". If your truck has an OBDII plug connection below the dash below the steering column, then connect a scanner to it to read any error codes that may be available, too.

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