2008 tahoe 5.3l afm/dod delete issue

[j91z28d1]

I don't remember, but did you ever turn afm off in the tune and vvt if you deleted that too

 

[Nickct203]

I don't remember, but did you ever turn afm off in the tune and vvt if you deleted that too

I actually went back to stock with active afm

 

[j91z28d1]

oh man and it's still missing?

I got nothing at point. I'd guess start your standard miss trouble shooting, compression testing, injectors and spark?

 

[Nickct203]

oh man and it's still missing?

I got nothing at point. I'd guess start your standard miss trouble shooting, compression testing, injectors and spark?

See my frustration. Plugs, injectors are brand new. Compression test is hopefully getting done Tuesday. I think my coils r bad. I only had a cyl 7 misfire till I moved that coil then it turned into a multicyl misfire

 

[j91z28d1]

See my frustration. Plugs, injectors are brand new. Compression test is hopefully getting done Tuesday. I think my coils r bad. I only had a cyl 7 misfire till I moved that coil then it turned into a multicyl misfire

you could check the ground wire to the coil pack. it runs to a bolt somewhere down on the block.

one guy found the wire as bad in that ground a few inches back in the harness. it just seems a bit odd for while side of coils to fail but who knows.

 

[j91z28d1]

if you can back probe the negative wire on the coil pack main plug and voltage drop test to the negative side of the battery with it running that might be a decent test to check.