Throttle Position Reading at WOT

[truegearhead]

Originally Posted by 78F350

Is the throttle physically at WOT, or is it that the accelerator pedal is at WOT? If the pedal does not reach full open throttle, try the adjustment at the cable elbow. I read that it is actually fairly common. Someone posted a good write-up a year or two ago on one of the forums, but I can't find the exact one. This one should help:
Non e-gas throttle cable adjustment?? - Pelican Parts Technical BBS

I’ve verified the throttle body is all the open and against the stop.

[Gilles]

Originally Posted by truegearhead

I’ve verified the throttle body is all the open and against the stop.

If the mechanical parts are working properly, then you may have a failing TPS (throttle position sensor) that is telling the computer that the throttle is at 80% when in reality is at 100%..?