Engine Idle Fluctuation -what can cause this?

Asked by TammyTude Jul 01, 2010 at 10:40 AM about the Dodge Dakota

Question type: Maintenance & Repair

Can bad gas cause your rpms to flucuate? say from 700 to 1200 and then back down to 700 repeatedly? What are other possible causes?  

2 Answers
33,425

Dan answered 13 years ago

on my 96 ram 1500 w/360 i had a bad idle air control valve and a bad TPS once i replaced those things i had no issues, but yes bad gas could also cause that

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GuruVBZG3 answered 5 years ago

I've replaced my idle engine control valve in my 2007 Dodge Dakota 4.7. It still fluctuating it's in idle what else could be the problem

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