03 4.7 ram automatic, engine stalls idling, under load. seems like pcm losing power because drive cycle monitors reset. box around gear selector disappears, will restart once key is turned to off position, then box re appears in gear selector and will start, although now it may start barely then quit. changed many sensors and parts and was good for almost a year, now starting back up again. anyone with this problem and a solution??

 

Many parts? More info.

 

I've replaced ignition switch, pcm, fcm, cam sensor, crank sensor, trans solenoid pack, throttle switch, fuel pressure is good

 

Holy cow. Throttle switch? As in TPS? Have you cleaned the throttle body? Cleaned or replaced IAC? cleaned the port. Does the pcm have current flash? Compression check? Is the battery good? Good grounds? Newer vehicles are very sensitive to correct or incorrect battery voltages.

 

Cleaned iac , throttle body, pcm was flashed, I cleaned grounds, battery is good

 

do me a favor. if you have a fob, remove the battery and see if you still have issues. my fob was messing with ignition, and not letting truck run like what your stating. once I removed the battery no more issues. but now I have to manually lock and unlock doors. or if you have a second key try using that one

 

Thanks for the tip, I ll give it a shot, your truck was doing the exact same thing?

 

Fixed, bad COP, internal short Causing stalling.

 

Hi i am having he same exact issue and have replaced almost everything you have ? what is a COP where do i find it and how to i replace it ?

 

Cop is the coil over plug. Meaning spark plug. If u have a V8 , you have 8 of them. Mine happened to be a new defective coil from AutoZone. It was shorting out and shutting the engine down, usually under load. I replaced the bad one, I think it was cylinder 4 or 6. It's been over a year and no stalling. It's a $30 part. Easy to change.