Engine/Transmission (1998.5 - 2002) Help.... Surging problem.

[OrangeCummins]

I just recently got my truck back from getting my motor work done and it ran fine but now when i'm on the highway in 5th or 6th gear my truck "chugs" or "surges" real bad. It seems like its kind of starving itself for fuel but i dont know what it is. I have a edge comp w/the wire tapped but its not a drag comp so i dont know if that may be it restricting it or not. My intercooler boots are still the stockers and i checked them and there all tight and as far as i can see all still intact. I could easily hit 50psi of boost before and now it seems like it bearly hits 40. My mods are in my sig. any help is greatly appreaciated.



2001 Amber fire pearl 2500 ext cab short bed H. O. 6spd. , B-1 bomber turbo, DD5 injectors, Schied cam, ATS exhaust and intake manifolds, Fass 150, edge comp tapped, Fire ringed and studed head, South bend 1347 Fe clutch, 4" turbo back exhaust, intake, isspro pyro, boost, fuel press gauges.

 

[ROADWARRIOR]

It could be several different things. On my truck, I found a green pin in my MAP plug on the Comp Box harness was causing a bucking in 4th and 5th gears. This happened even with it being greased.



Dan

 

[Turbo Tim 1]

Is the ground from the Comp going to the battery or the intake horn. I had surging issues when mine went to the intake horn, I moved it to the battery and it's been fine since.

 

[tunod_68]

Yes Yes!!! Ground on comp! I had similar probs until I moved it to a good ground.