LMM: Truck falls flat when shifts into 3rd

[jcambron]

Info on truck is in sig. Boosted 3psi launch truck ran hard till it shifted into 3rd and truck fell flat and held at 3k rpm would not continue to pull. Is it loss of fuel or banks defuel due to trans slip?? Truck was set w/PDA to SL. Can't wait till I can get EFIlive and boot kick this BANKS stuff.

 

[03-GMC]

I bet its a clogged fuel filter. I've had the same thing happen when i first raced my truck

 

[jcambron]

It's been doing it for a while. Fuel filter gets changed every 10k only 26k on the truck.

 

[Brian1]

10,000 is a about the max life of these fuel filters. I can really tell at 12,000 that it is needed changed at WOT so I ususally just change around 7500 miles when doing all other routine maintance. If the Banks can read data off the OBDII port like the desired fuel rail pressure and actual fuel rail pressure you could tell if the fuel rail is running dry. I would say that is your problem but like you mention maybe the Banks. Banks alters codes between the ECM and engine so hard to say. Just need a device like and Edge Insight, MSD Dashhawk II, or EFILive Flashscan V2 to monitor those PIDs. I leave defuel in if running a non built allison. Trans-go may help but not a built transmission.

Brian

 

[gmduramax]

Probably need a lift pump also

 

[Dozerboy]

How much fuel in the tank? Below a 1/4 will do that on my truck and some times just randomly I will start losing RP.