Need help! lq4 turbo Yukon runs horrible with load
#11
Thanks for the help guys.
I have a new log with the PE fuel dump taken out. It looks to me like its running fine in the log, however it is very hesitant and accelerates crappy like multiple misfires are going on.
Could someone take a quick look and see if there is something out of whack.
There is a different pcm in there reflashed to the yukon, which is why he says it still says olds in the header, but it is my truck..
I have a new log with the PE fuel dump taken out. It looks to me like its running fine in the log, however it is very hesitant and accelerates crappy like multiple misfires are going on.
Could someone take a quick look and see if there is something out of whack.
There is a different pcm in there reflashed to the yukon, which is why he says it still says olds in the header, but it is my truck..
#13
If the engine is breaking up under boost, Wont misfires show up in the wideband log as lean spikes as the unused o2 is picked up by the wideband???
They keep telling me that the a/f is fine, but cant show me a log.
I would take it somewhere else but I have already paid for them work. Anyone have a LS tuner mechanic recommendations for the Denver area? I guess eventually Ill have too. 7 months later I still dont have a working truck..
I dont know wtf to do now...
#15
So I think we finally got it worked out. I ordered a new PCM with the latest updates from gm and it is working now. I was told that since my pcm is a 2000 gmc and has never been updated by the dealer it wasnt working properly with HP tuners. So we put a new pcm in with the latest updates from GM and now it seems to be fine..
Anyone else have this issue before???
Thanks guys for the input on this issue...
Anyone else have this issue before???
Thanks guys for the input on this issue...
Thread
Thread Starter
Forum
Replies
Last Post