Ok I have a 2005 5.3 l Silverado CCSB. Lt. headers. 212 218 low lift cam. Ls6 springs. Cm pushrods. U/ d pulley. Cai. 2600 stall. Vette servo. Transgo shift kit. Off-road y pipe. Magnaflow cat back. 4:11 gears. My problem is after puttin stall shift kit and 4:11 gears in. My truck just gives itself gas going down the road. Not a lot but enough to make you hold the truck back with the brake when you need to go slow. I cleaned my maf and tb. I have no vacuum leaks. I do have a mail order tune. He has sent me a 2 nd tune and it's not any better? Any help would be appreciated.

 

im going to try and upload a video

 

If you put it in P/N does it idle where it should? If you rev it up do the rpm's hang for very long?

 

Sounds like too much desired airflow and/or too much throttle cracker. Tune probably needs to be adjusted.

 

yes when you put it in park or neutral it idles fine.

 

ok ill try to post a video. or maybe I can text it to my tuner?

 

Your tuner sucks ***** or doesn't care. Maybe both.

Bitch at them till they fix it or start tuning yourself.


He probably needs to play with desired idle airflow as mentioned but I wouldn't be surprised if spark is part of the solution.

 

well like I said its a mail order tune. and he has tuned about 15 vehicles for me so far and this is my first issue. I cant find anything wrong with my truck that would make it do this. that's why I think it may be in the tune?

 

Yes. I am betting it is the tune. When I did my cam I really had to work over the throttle cracker, desired idle airflow, and spark tables to get the vehicle not to pull too hard. The tuner I used for help told me I needed a high stall TC which I am sure would have helped but I got the truck to stop pulling w/o the TC swap.

 

I'll contact my tuner. I have a 2600 stall already.