I have a 2001 dodge ram magnum 5.9 that when idling stays at 500 rpm cold or hot. Truck also turns off after I stop the car from accelerating not sure if they have anything to do with each other but that's the problem I have now thank You!

 

Getting any codes? (I would expect a P0505.....) If it idles at the same speed, regardless of engine temp, the IAC is not doing its job. Need to find out why.

 

I do have that code.. Is that valve an easy DIY project? I just got this truck and have a lot of things I have to fix.

 

First need to verify that the valve is actually the problem......

It hangs out on the back side of the throttle body. There is a four pin connector plugged into it. With the ignition on, (not necessarily running engine) you should have 12 volts on two of those pins. (unplug it to test, its just easier that way.) If you have voltage on two pins, next step would be pulling the throttle body, and cleaning it thoroughly, paying special attention to the IAC well. (pull the iac out of the throttle body, makes cleaning easier. just use carb cleaner, or brake cleaner, either works. If it is really nasty, might have to stick a toothbrush, or something in there, to get it to break loose. Leave the battery disconnected while you play.) After it is good and clean, and reassembled, turn the ignition to On, (not start) count to ten, then start the truck. It might take it a bit to sort out the idle, but, it'll learn it in a few minutes or so. If it still doesn't want to idle right, replace the IAC. Use a genuine mopar part, don't bother with the aftermarket fellers, they do not always work as advertised...... (and some simply don't work at all......)

If you do NOT have 12 volts on at least two pins, Replace the PCM.

 

I appreciate that! I will be doing that this weekend when I have more time to work on it!