1997 Dodge 1500 Pick-up V8 5.2 - Truck will start and idle. When your in drive and let up on the gas the RPM's go to 0 the lights dim and the truck shuts off. Did look for a vaccum leak and didn't find one.

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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