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Hello everyone,
New to the forum and this will be my first post so hopefully I can make it a good one. I have a 2003 Dodge Ram 1500 with a 5.7l hemi. The truck has been suffering from intermittent issues for the better part of the last 6 months. The issues come and go. Some times day to day and some times a week at a time. The issues range from power idle to hesitation when beginning acceleration. Lets start with the idle. When the truck is cold it starts right up and the idle is strong but after the truck has been running for a bit and starts to get warm the idle begins to drop as if it is going to die. If I shift it out of park into gear the idle stabilizes. This issue comes and goes. When I go to accelerate from a dead stop no matter if its reverse or driving forward it hesitates as if it will die then it jumps forward and the rpms rise quickly. This problem also comes and goes. The truck drives perfect when on the highway at speed. I have cleaned the throttle body and replaced the IAT and Map sensor. I have also replaced 02 sensor 1. I also have reset the PCM a number of times and immediately after the truck runs perfectly but after a day or two, and sometimes even up to a week the check engine light returns with codes. I have gotten a lot of different codes as well here is a list: P0132, P0137, P0138, P0300, P0442, P0571, P2112, P2106. The P0571 has to do with the cruise control and that works fine. I feel like the truck is giving me the run around. I have also replaced spark plugs with copper core plugs. I have been leaning towards cat inefficiency or a bad PCM but am not sure. Im sure the codes are telling me a story but Im lost so any help would be much appreciated.
 

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here is a list, just because it may read a certain sensor, it could be that sensor or something between it & the computer

https://www.obd-codes.com/p0132
https://www.obd-codes.com/p0137
https://www.obd-codes.com/p0138
https://www.obd-codes.com/p0300
https://www.obd-codes.com/p0442 ... usually a loose or bad gas cap

P0571 Cruise Control/Brake Switch A Circuit Malfunction ... generic code, no info
P2112 Throttle Actuator Control System - Stuck Closed
P2106 Throttle Actuator Control System - Forced Limited Power

Good Luck
 
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