Engine/Transmission (1998.5 - 2002) Dead Pedal-APPS/TPS adjustment

[NW_Jim]

I just performed the re-calibration today and I just wanted to add one thing to Arlan's post. When you get the Bellcrank turned over to adjust the APPS sensor, be careful not to move the throttle cable or the volts will change. The throttle must stay against the stop for this adjustment to be accurate. My voltage reading was . 450 and APPS listed . 584 I got it really close and it stayed that way after tightening the screw but once all bolted back together I moved the throttle and let it go back on the stop and it did not repeat real accurately. It went to about . 564 and then to . 575. I suspect this is either normal or an indication that the APPS IS bad and this is the reason the voltage was off to start with. Time will tell.

I was pulling 0122 codes and having intermitent throttle surging and twice pulled a 0121 code and had a completely dead pedal. I had tried a ground strap on the ECM and got about 20 miles. I then tried unhooking the battery cables, cleaning the connections and battery terminals, unplugged the APPS, checked voltage from the computer, applied dielectric grease, and did the reset and got 250 miles.

Time will tell. I will post my mileage and experience too as I think it is important for others like me who will read this later.

Sorry it took so long for my follow up on this post. I lost track of mileage after 1000 and I don't drive the truck much but I am sure I have logged several thousand miles since this fix and have had absolutely no problems at all with this.

 

[jandtjil]

Trouble free, glad to hear it! Thanks for the follow-up.