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I have a 1999 Dodge Caravan 3.3L V6 with 90k miles. It idles cold at ~1k RPMs, but decreases to between 600-750 RPMs as it warms up (see screenshots). It occasionally kills if I have to hit the brakes quickly. It used to happen only once in a while, when I had just under half tank of gas (I never let it go below 1/4 tank), but the last time it happened was on a full tank. It's not throwing any codes. Any thoughts? Thanks in advance.

~Chele
New Orleans, LA

P.S. Has new IAC valve and MAP sensor. Will be changing TBP sensor and fuel filter this week.
 

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Thanks for the reply!

I cleaned it back in January or February of this year, when I partially tore the engine down (I didn't start the job with that goal, and it took me forever to learn how to do everything it needed as I got more into it).

When the IAC went out, I barely got it to Firestone, had them diagnose that, and replace it. Shouldn't Firestone have checked that port when they changed the IAC? If they should have done it and didn't, I'll bring it back there and make them do it.
 
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