A couple of questions

[countrycorey]

So last year my dads 04.5 LLY started surging. He Took it to a dealer and had the FPR "cleaned", which seemed to help for a while. Fast forward to present and now it seems to have returned and is surging stronger than it did last year. I tried to log it but my V2 doesn't have the LLY PIDs loaded and my laptop died. Any ideas?

Also, I found the following screenshots of codes stored, any ideas what caused them?

Thanks guys


Corey

 

[countrycorey]

Anybody?


Corey

 

[NC-smokinlmm]

Codes are related to abs so maybe there is a non factory wheel bearing on it. As for the fpr, add some diesel kleen to it, triple dose it and see if it settles down. Any trash or water containation will make them act up..,

 

[Awenta]

Run an additive every other tank. Diesel kleen or 2 stroke oil.

Clear them and see if it come back?

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[countrycorey]

Been running diesel Kleen through it regularly. Might try some 2 stroke oil and see if that changes anything.

Edit:
There is no check engine/service engine soon light illuminated. The codes show up on in my V2. But if I try to use my old diablo tuner, it comes up with no codes.

Corey

 

[testdrive]

Had a friend who had bad surge and roughness and this really did fix the problem, not hard to do. This also improved the balance rate, but the real problem was the regualtor.
good luck
use this GM cleaner
and follow this procedure

 

[countrycorey]

Update:

Dad took the truck to Dustin at Diesel Addiction this morning. They diagnosed it as a bad FPR and they were able to get him fixed up, and tuned it for him. My dad has always loved his truck, but I could hear the ear to ear smile over the phone when he called after they were done.

Thank y'all for taking care of my dad fitting him in this morning.

PS, he loves the tunes.


Corey

 

[Awenta]

Good news!

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