LLY: Dead Pedal in Lo Range ONLY

[ikeG]

Sled pulled first time since i tuned it last night. Havent been in low range since last year. Pull up, hook, try to boost er up a bit. No pedal, truck just idles. Put it in neutral, revs up fine. Back to drive, nothing. Tried D, 3, 2, 1, diff DSP setting, nothing changes. About to tell the flagger she wont go but i let off the brake and floored it first. Idled along about 10ft and then all sudden, took off like a raped ape! Tried in driveway a bunch today to confirm that it only does this in low range. It will take off after min of 4-5 seconds of holding er down. Never had this prob with Nicks tuning. Now im tuning it myself so im thinking i missed a table somewhere but i cant locate it.

Any ideas??

 

[ikeG]

No codes in driveway today but had a couple last night during pull. P0103 and P0100

 

[whytry]

I think what your looking for is in engine protection like limp home secti don't have computer to look at

 

[ikeG]

Maxxed out limp mode tables to 120. No go.

Morning bump

 

[JustinD]

Isn't there a limiter for 4 low only?

 

[sddmax]

I had this problem a few years ago on my lb7. did the same exact thing you describe. It had to do with the torque management on mine.

 

[nuffsaid]

I was having this problem with my 02 and I learned to clear it by pushing down on the throttle pedal and then fully releasing it, then it would run normal. I just had my tcm reflashed at the dealer yesterday so that I can install a fleece tap shifter and low and behold, my low range dead pedal is gone! At least the two tests I made passed.

 

[MD_Max]

Sled pulled first time since i tuned it last night. Havent been in low range since last year. Pull up, hook, try to boost er up a bit. No pedal, truck just idles. Put it in neutral, revs up fine. Back to drive, nothing. Tried D, 3, 2, 1, diff DSP setting, nothing changes. About to tell the flagger she wont go but i let off the brake and floored it first. Idled along about 10ft and then all sudden, took off like a raped ape! Tried in driveway a bunch today to confirm that it only does this in low range. It will take off after min of 4-5 seconds of holding er down. Never had this prob with Nicks tuning. Now im tuning it myself so im thinking i missed a table somewhere but i cant locate it.

Any ideas??

Very old thread but did you figure this out?