Originally Posted by tool

Well to test your theory I did the voltage adjustment procedure This weekend on my '99 MANUAL truck. It has had severe dead pedal problems especially just off idle (like going through a school zone and applying very light throttle) it woul cut to idle, trigger the CEL light and not respond to foot feed input until you press the pedal 3X.

The tag on the back of my APPs read .535 Volts, I found by probing Pin 23 on PCM that it was registering .290 I adjusted according and got dang close to .535 put everything back together. Started it up and it immdeiately began to "idle" at 1400 RPM !

Wondering what the heck I might have done I decided to drive it a little and see what it would do, ran fine just idled high. So........ I turn around to go back home and truck tripped the CEL light and cut to idle, no amount of fiddling with pedal would make it run normally. SO I idled the 3 miles back home in 3rd. SHut truck off, pulled codes with my scanner and got a whack of APPS related codes and "input voltage out of range" etc. cleared the codes started 'er back up and now it seems to be working perfectly!! No more dead pedal, no more APPS codes. I have put about 500 miles on it so far.

Seems as though this procedure was VERY worthwhile on my MANUAL tranny truck.