Engine/Transmission (1998.5 - 2002) off on switch like LOW power????

[Winspeed]

In my 2000 (2500 4x4 6 speed 235hp 100k mi) at times I can be driving down the road and it will hardly get out of its own way, and then like a light switch, bang, its off and running good again. At times it wont even get over 50 mph on the freeway. The truck is stock except for the holley lift pump (which is putting out 9 psi at WOT). I changed the MAP sensor but the problem still exists. And seems to be getting worse. Any help would be GREATLY appreciated. Thanks guys

 

[Hohn]

Check for inj pump codes. Once you have that off your mind, check out your IAT to see if it's dirty. Calibrate your APPS. Do all this and get back to us... .



Justin

 

[Winspeed]

We had it scanned today and the Throttle position sensor code had been set. We'll change it tomorrow and I will report back. THX-Adam