reddawg

hoping some one can help.about three weeks or so ago i started having problem,truck would act like it had a dead pedal leaving red lights stop signs etc. after a few seconds truck would pick up and go noticed that it would start acting like this when truck was hot. any suggestions? thanks

AAmeeting

Sounds like the Ol VP44 is about to go out. Do a search on the VP44 and you will see.

rebal

check your lift pump and try a APPS reset if you go to auto zone and run the codes look for 0216 thats your Injector pump (RIP)

reddawg

just replaced vp44 about 10,000 miles ago or less checked codes on snap on scanner pulled no codes lift pumped was replaced at same time with the holley pump every one talked about getting good pressure on fuel gauge at idle acceluration and wot.

neveragain

Does the engine sound tinny? Undo the ?? 6 bolts on the APPS and look at the voltage stated on the POT on the back. If you have a multi meter check the voltage on the orange wire at the PCM. The adjustment for it is easy and for the 6 weeks that mine lasted was noticable. It's back to the rev and scream but little power till after 1600. Being passed by a mini van on the hiway before I can get it going is annoying.

Rauschbo

I HOPE it's fixable with an APPS calibration, but it sure sounds like a VP44 (especially as it shows the effect when hot); I didn't see a FP gauge in your signature....?

reddawg

i do have fp guage 14 psi at idle and never goes under 9 psi on heavy accelerate. do i check voltage with key on and no throttle or do i check while working throttle. anyway i hope it is fixable with apps also. just replaced vp 44 and lift pump lessthan 10,00 miles ago. after the 2 or 3 sec dead spot the truck runs like a beat dog and fuel does not go under 9 psi and the motor builds good boost any way thanks for you guys thoughts on this

Justin26

My truck did the exact same thing. They had to replace the lift pump and the injection pump. Check your codes and see if it shows anything. Even if they just replace the lift pump the vp44 might not be far behind going out.

Justin

2001 lwb 4wd auto 75k
edge ez
afe air filter and torque tube
silencer ring mia
leveling kit
305s and eagle aluminimum wheels

rebal

Does the VP44 on the truck have a black top?

reddawg

no it is a silver top

reddawg

has any one heard of the tst power max going bad .I just completely disconected it and the red light dead pedal seems to have gone away,

reddawg

would you beleave my dead pedal from red light problem seems to be fixed .pulled out map sensor cleaned and reinstalled due to talking to gentleman at tst truck runs better then it ever has and i bought it new