Hi all,
Recently bought 2003 4.7 Ram. Truck has been a lemon since purchase. Anyway, new problem - drove to hardware store 15 miles away and truck ran good. On the way home, anytime I accelerated above 2000 rpm, the engine just died. Happened 5 times on the way home. As soon as it died, I pulled off the road and tried starting. It would start and die immediately. Let it sit for a minute, starts back up and runs fine. Take off and drives good unless I go over 2000 rpm's.
I have been having the erratic idle once awhile. Cleaned the throttle body previously but didn't clear up. Honestly, the erratic idle doesn't bother me that much but now the engine dying has me concerned. I have not had a chance to pull any codes yet. Anyone have any ideas? Thanks in advance.

 

mid you flip the key over to the auxiliary position 3 times in a row stoping in the forward position on the third time it will flash the codes on the instrument cluster just below the mileage. I would start by doing this as you done need an obd2 to do it and it may flash a code a normal obd2 won’t pick up

 

I will update with any codes tomorrow. Thanks.

 

Code P0121 - TPS showing

 

Throttle position sensor out of range. That's sensor "A", wherever that one is. That'll give ya some problems.

 

Replaced TPS - took for a short drive and seems to run much better. The o'ring was missing from the sensor also.
Also did the 4x4 transfer case linkage fix. 2 things fixed today so it was a good day.