2002 Dodge Intrepid Q&A
2002 Dodge Intrepid Question: My 2002 Intrepid is idling rough and stalling at stop signs, red lights, etc.
I have an 2002 Chrysler Intrepid. The engine is a V6-167 2.7L DOHC. It is idling quite rough, and stalling at red lights, and stop signs, or in heavy traffic. I have to turn the car off, and then on again to get it to start. Not every time, maybe one out of every three traffic lights, etc.. but that is enough to frighten me. I took it to a mechanic and just had the alternator replaced. It didn't fix the problem like the mechanic said it would. He also replaced a hose in the cooling system since it was leaking some fluid. This also did not fix the problem. I also recently had an oxygen sensor replaced as well, although its still coming up as bad in the codes when they plug in the diagnostic tool. They're pretty sure its not the O2 sensor. But that didn't fix the problem either. They even put the O2 sensor in a different spot? What do you think? What else could be wrong with it that is causing this stalling and rough idling? All the mechanics I've taken it to have yet to fix the problem. - caitlin23
does it run fine cold then act up when the car warms up. - holston2008
It is hard to say, as not seeing directly what it is doing is a problem. However if the vehicle can stay running if you have your foot slightly on the gas at a complete stop, then it would be your IAV (Idle Air Control Valve). As this rarely sets codes due to it being a valve and not a sensor, and does not allow the engine to recive the air it needs (ie. idle rough and die at only stops, but work fine when throttle is pressed). - Silva Automotive
well I have a 2002 Intrepid 3.5 and after the car gets Hot usually in heavy trafic .. it will stall out at stops.. i had two problems .. the High Fan Switch was bad .. so the cooling fan never went into a high mode .. found the relay bad by accident .. switched it with the engine Kill relay and car would not start .... the other problem .. i never suspected .. the thermostate was Not bad ,, But the rubber seal was torn and keepint it from operating correctly.. after i replaced the thermostate .. and radior cap .. No more enging stalling .. the car only ran a litter hotter than normal .. but that was the problem ... hopes this helps .. - phillip1949