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Still not up?? taking me to some random HP Tuners fake site

Thanks for the help 5FDP. So I found the issue...... which is nuts. I think last week when my daughters seatbelt fell behind the seat and got wedged I pulled it up and popped the fuse out for the O2...

Great idea, I had been looking to check fuses, although the harness fuse block is not labeled.....
Thanks !!

So, tried this and when I command LTFT the truck gets rich as hell like down to .6 Stoich . I have reverted my tune and checked the parameters of everything and no luck.
Any help is appreciated.

bump

Also, Thank you 5FDP

I am getting the O2 codes,
0x10: P0134 - O2 Circuit No Activity Detected (Bank 1, Sensor 1) (Pending, Current)
0x10: P0135 - O2 Heater Circuit (Bank 1, Sensor 1) (Pending, Current)
0x10:...

Hey all,
I have been recently learning to use HPT and working to correct a tune that came on my truck. I was told to start with MAF and go from there. I went in and turned off LTFT by maxing out ECT...

Definitely better. I also pulled a stock tune from the repository and pulled and copied tables in an effort to be as close to stock as I can. Still getting the gear hunt and the TCC seems to stay on...

5FDP,

Good call on the tire size and gears. Didn't even look(Newbie).

LSandlteditor,

Appreciate the tip, sounds like an entire can of worms. Could it be the TC locking and unlocking?

Hello,

I am new to the forum and using HP tuners although I have been a master tech for 25 years. I recently bought an old c10 with a 2004 4.8L LS. The guy I bought it from put a tune on it and it...