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Discussion Starter · #1 ·
My 2004 unlimited with automatic will just stop running when idling at a stop light. It is just like you turned it off with the key. It starts right up after stopping. Any ideas on what it could be?
 

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If you put it in other "gears" beside having it in D does it stop? N for example?
 

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Throwing any codes? Happening at idle could be a dirty IAC
 

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Discussion Starter · #4 ·
No codes were seen and not sure if it would stall in neutral or park. So far on drive.
 

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What is IAC ?
Idle air controller which is what provides all of the engine's air when you're not stepping on the gas pedal. The IAC is mounted onto the passenger-side of the throttle body. If it's dirty enough it can prevent the engine from idling without keeping the gas pedal pressed down a tad.

A weak/nearly dead battery like if you had to jump start the engine lately can also cause it to die at idle.
 
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