03 Ram 4.7 Rough Idle
#1
03 Ram 4.7 Rough Idle
I have a 2003 Ram 1500 with the 4.7 L that has a rough idle at a stop light or sign. Sometimes it idles bad enough that it dies but it will restart. It doesn't set any DTC's. I have tried a new throttle position sensor and downstream O2 sensor. If i unplug the downstream O2 sensor the truck seems to run fine. Any one have any ideas? Any help will be appreciated
#2
By downstream, you are referring to the sensor after the catalytic converter, correct? Just making sure, some people confuse the downstream/upstream definitions.
For future reference:
https://dodgeforum.com/forum/dodge-r...s-section.html
For future reference:
https://dodgeforum.com/forum/dodge-r...s-section.html
#4
Yes i am referring to the one after the converter. As far as the tune up i don't know. My friend has owned it since May and they haven't done anything to it. i did check the throttle blade. I didnt see any build up on it. And i did remove the IAC and check it. There wasnt really build up on it either. I did use a rag and wipe it clean.
#5
I had a misfire in one of my cylinders. One of my plugs was smashed and had the incorrect gap. It ran rough, and I would pull up to a stop light and the truck would just shake so bad. My truck didnt throw any codes for a day or two. Might pull the plugs and check the gaps and see if they need replaced.