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sprinkles08, Chrysler/Dodge/Jeep master tech
Category: Dodge
Satisfied Customers: 22821
Experience:  ASE Master and Advanced Certified, Chrysler/Dodge/Jeep Master Certified, Trans and Hybrid Specialist
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Submitted: 2 years ago.
Category: Dodge
Customer: replied 2 years ago.
I have a 97 Dodge 2500 360 engine. Starts but dies after the gas pedal is released. No idle.
Customer: replied 2 years ago.
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Expert:  sprinkles08 replied 2 years ago.
Hello and welcome to JustAnswer!
Assuming the engine runs otherwise ok and no fault codes are setting, the problem is with the idle air control motor. The IAC is on the back of the throttle body and is what allows air into the engine when the throttle is closed.
The problem may be the IAC itself, carbon buildup in the throttle body and IAC bore, or the root cause may be the batter. When battery voltage falls low during cranking the engine controller will lose it's IAC step count memory which will prevent it from idling correctly until step count is relearned.
The first thing that should be addressed is the battery. If it's ok or the problem remains after the battery is replaced then odds are the IAC will need to be replaced.