my truck has been running rough and shifting hard I thought the throttle position sensor was bad so I put a new I put a new 1 in and the truck ra and one in and the truck ran great and the truck got its ***** back. It was shifting at higher rpms. but my check engine light came on I brought it back to the car parts store and the code was for the TPS. I thought I may have got a faulty 1 so I returned it but they didn't have any more left so I went to the part store across the street and got 1 and now my truck is back to running rough. Any ideas?

2001 Dodge ram 1500

 

Did you reset the PCM (disconnect the battery) when you changed the TPS?

 

Shoot!!!!!!! No i didn't

 

But now with new tps my cel is off and still running ruff and hard shifting. Maybe i should get tps from dodge?

 

Try disconnecting your battery for five minutes first.... See if that doesn't improve it's attitude at all.

 

Running rough? I doubt the TPS is the problem. Try cleaning the IAC, https://dodgeforum.com/forum/dodge-r...n-the-iac.html

AND DISCONNECT THE NEGATIVE BATTERY CABLE BEFORE CLEANING OR REPLACING ANY SENSORS.