Engine/Transmission (1998.5 - 2002) Throttle going flat while crusing at 1400 RPM

[PBoland]

After much reading, I’m looking for opinions. While driving steady less than 60 MPH, roughly 1400 RPM the truck will go flat. I press the accelerator to the floor and get a few second delays before it accelerates and will jump at that and downshift. I’ve changed the fuel filter twice. I did the transmission reset by turning on the key and pressing the accelerator three times. The problem is intermittent. From the forum I see a few things other than the VP44 going south: APPS, TPS, MAP Sensor, battery grounds.



I plan to try and do the APPS/TPS sensor reset procedure and verify battery ground.



Any other suggestions?

 

[PBoland]

No codes present, plenty of fuel pressure.

 

[CAPTPHIL]

TPS is in the process of going out. I have had lots of exp. in the course 1,000,000 mi. on two 2nd gen. 3500`s. Best source is Geno`s. Good Luck

 

[FDavid]

I had the same problem. I cleaned my IAT sensor, reset the apps and put on a new lift pump and now is as smooth as silk. Can't tell you which one of the fixes did it though.

 

[PBoland]

Thanks for the input, I'll give this a try and let you know...

 

[PBoland]

Well Boys & Girls, it was a bad VP44, code 216. Swapped the pump, 4mpg increase, power and turbo spins up faster... ...