Okay to start off I am throwing three codes, P1388, P0122, And P1693. This is whats going on, I started driving 200 miles twice a week to college about a month ago, About 3 hours into the drive I was around half throttle and the truck didnt stall but the throttle just quit. Check engine light came on then two seconds later I had throttle again. Pulled a code for low APPs voltage or whatever the code was, so when I got to school I got out my DMM and reset the apps to the right voltage. Well it ran a little better for awhile but today it did the same thing with the throttle quitting on me for a few seconds that all of a sudden started to work again. Check engine light was on again. Is this a faulty apps is am I missing something here? I get dead pedals, I know I need a pump but I know the pump is not that well gone. Also in the mornings the truck will not rev up not even in neutral hardly moves going down the road, if I put the pedal to the ground it all of a sudden rev's high as hell and takes off but shifts weird. This all goes away after the motor is around 150 degress. Any help would be awesome, thanks guys.

Evan

 

Here is a link that has a lot of good info for you including how to test the apps with a multimeter. VP44 Diagnostic

 

Thanks