I have a 03 Dodge Ram 4.7l all stock, with the airraid system being the only modification. I started noticing the rpms jump when coming to a stop when my O2 sensor when out, being swamped at work i procrastinated about a month before changing it but after i changed it still continued. I have changed the iac, pcv, transmission service, changed spark plugs and problem persists. Something i have noticed tho is that when i clean out the inside of the throttle it seems to fix the problem for only about a week, then it starts up again. Any ideas? Can it be the tps? Could waiting so long to change O2 sensor, messed something up? There is no check engine light on

 

Changing the 02 sensor had no effect because it plays no role in the system which you are describing.

It sounds to be like you've got a bad TPS or a partially stuck IAC. My question is this: did you disconnect the battery while performing the work? If so, you were resetting the PCM's learned ranges for the TPS. I would think this may be the problem as you stated that it came back after a week.

 

For future reference:
https://dodgeforum.com/forum/dodge-r...s-section.html