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engine dies when you let up on gas
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elrick
User
Oct 11, 2009, 9:21 AM
Post #1 of 2
(1395 views)
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engine dies when you let up on gas
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have a 96 C1500 Chevy truck. The engine dies when you take your foot off the gas, but only AFTER the truck has warmed up (after driving 30 minutes or so). AutoZone hooked up their computer diagnostic tool and it said, "Multiple engine misfires". I have changed the plugs, wires, distributor cap and rotor, ignition coil and ignition control module. After all that, the engine still dies if you take your foot off the gas. Do you know what might be causing that?
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Hammer Time
Ultimate Carjunky
/ Moderator
Oct 11, 2009, 10:28 AM
Post #2 of 2
(1391 views)
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Re: engine dies when you let up on gas
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Start out by making sure your EGR valve is not sticking open. I doubt it is because it would stall so quickly for that.
You may have a bad IAC ( idle air control) but try cleaning the throttle body first. Remove the intake snorkel, have someone hold the throttle wide open for you and scrub the back side of the throttle plate and surrounding bore with an old tooth brush and some carb cleaner. Be sure to spray some into the small holes next to the throttle plate. That should help stabilize the idle. If it still has a problem, replace the IAC.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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