2007 Freightliner Columbia Detroit 14L no throttle

Did you change the Accelerator Pedal too or just the Pedal Sensor only, because if the Pedal has play in it, it will also cause the issue you are describing.

 

Yes, they start getting play in them, when you let off the Accelerator Pedal, even though the pedal physically is back at Zero, internally the position that the ECM is reading is not, causing the hesitation because the ECM is not reading the proper value. It happened on my truck and I replaced the Pedal and it works perfect now. It's a common problem associated with age and wear.

 

Had this happen years ago n the computer needed to be reprogrammed for it to stop.... Changed out tps five times before someone realized the computer needed updating...

 

I bet there is an intermittant short in the wire going from the TPS to the ECM. Most likely on the OEM harness from firewall to ECM. Before throwing parts at it, pull the loom off of your OEM harness and check for chaffing. They like to chaffe about 1 foot from the ECM connector.

 

like chip said,where the wire loom loops down coming out of rear most (o.e.m.)ecm connector.remove plastic loom and tape.90% of time problem is there.good luck.

 

I changed the ECM and after I got a yellow check engine, I pressed the pedal a little, so the yellow check stopped burning, but at the same time cruise control did not work. What could it be? need to change the pedal or just the sensor?