Micah201
Junior Member
- Joined
- Jan 25, 2015
- Posts
- 12
- Reaction score
- 0
- Location
- New Iberia, LA
- Ram Year
- 2003 & 2007
- Engine
- 5.7 Hemi & 5.9 CTD
Hi there. I'm new to the site and am having an issue with my truck. Just some background info. It's an 03 ram 1500 with a 5.7 hemi. Truck has aprox 345,000 miles. All original, nothing ever done to it performance wise. About 4 months ago I started having an issue with the idle. When I shift to park or neutral the idle is all over the place. Revs up and down. Varies by about 1000 rpm at times. If I leave it be it will eventually die. Cranks right back up though. If I shift the truck into reverse or drive the idle smooths out, although it does seem to idle low. It will hold a steady 600 rpm. When accelerating, it's not smooth at first. Seems that the first 10% of the pedal does nothing. After that it's smooth sailing. The only dtc's are for the oxygen sensors. Cat "fell" off years ago, and the codes have been there since without causing issues. About two months ago I pulled the throttle body and intake manifold. Cleaned them both very thoroughly. Put it back together and had no issues for about another month. Idled perfectly, throttle response was smooth and instant. About a month after I cleaned everything out it started acting up again. Same issue. I pulled it all apart again and cleaned it out, but this time it made no difference. I'm leaning towards replacing either the throttle body or the throttle position sensor. Just not sure which one is causing the issue. By throttle position sensor, I'm referring to the part that the throttle cable connects to, which transfers the throttle imput electronically to the throttle body. (Not sure if that is the correct name for that part). Just looking for some ideas on how to narrow the problem down. I've turned many a wrench, but I specialize in diesel, gas engines are just foreign to me. I appreciate any help you can offer. Thanks, Mike
I know sometimes it helps to see the problem so I uploaded a video of what it's doing. Here is the link. https://www.youtube.com/watch?v=5AhbBYwdg1w
I know sometimes it helps to see the problem so I uploaded a video of what it's doing. Here is the link. https://www.youtube.com/watch?v=5AhbBYwdg1w