How long has it been doing that for.

 

Bump for something else. Has anyone had this problem fixed. My dealership ( hayes in lawrenceville, GA) are idiots. Does anyone have a good mechanic in the ATL metro area. I have a 3 yr unlimited mileage powertrain warranty but this is getting old. 2 years left on warranty

 

Sounds like it might be time to ask to talk to a factory warranty Rep., if they even have them anymore.

 

you need to find someone that can scan your data parameters,mine was doing that but it was the egr.like weed said you should have your 02's checked,my neighbors 99 was doing the same as yours and i found his b1s1 was shorted to ground with no cel.computer don't know to run lean or rich...

 

Never stalls, but it will hunt for a proper idle when coming to a stop. Typically will drop to 300rpm. I've noted that if I very slightly tap the acc. pedal it will jump back to the proper idle and hold it just fine.

Not plugs or electical. Suspected Tps or some other PCM control. Also suspected O2 sensor, but with no CEL on this seemed a long shot.

When engine idle is bumped becasue air cond. is on there is never any problem. So whatever is causing it is something that is only marginally effecting the idle.

 

My 07 did this a few months after I bought it, very annoying. It went away after I put the efan, or tuner on it, not sure since they were at the same time.

 

Was the throttle body removed and when cleaned? If it is dirty, it can cause the blade to stick and cause an unstable idle.
A steady 500 is normal for a Hemi when at normal operating temp.

I have had good luck with the yellow Duralast batteries from Autozone. 8yr warranty.

 

I also have an 06 1500 hemi an the rpms go from 150 to 500 but usually dtays on 200 most time when stopped. No engine light. I just changedbout the egr valve last night an still the same. Can anyone please tell me what to do to fix this without having to buy new truck

 

Try resetting the PCM.

 

Was thinking aboutt changing the pcv. But im not made of money an this is annoying. Please sokeone tell me what up. I also have a short somewhere been going for long timr I put one blinker on an the other comes on an off. That has been going on for a year but this rpm thing has been a one month thing