Seams pretty common when I tune in a COS3 with open loop on hot starts the A/F is lean and takes a few minutes to go back to the commanded/tuned 14.5-1. I'm talking sometimes it is 17-1A/F. Is there a table that can be adjusted to richen hot starts?
Start up A/F's
Seams pretty common when I tune in a COS3 with open loop on hot starts the A/F is lean and takes a few minutes to go back to the commanded/tuned 14.5-1. I'm talking sometimes it is 17-1A/F. Is there a table that can be adjusted to richen hot starts?
The tables [A0008] and [A0014] are for start up trims of AFR , in COS3 .
Do a search on here for both and there is a lot of info .
Saw the same thing and those tables cured the problem .
2005 1500 HD , Custom OS3 SD tune .
2006 Trailblazer
Dinosaurs and Plants gave their lives so that we may drive , long live fossil fuel .
Those are for weather conditions.The problem I have is that the vehicles start lean no matter what condition (hot/cold)then take a few minute's to fall back to the tuned settings. Figured there might be a start table that can add fuel.Originally Posted by tunedbyGM
It's really not a big deal since the vehicles run great,just bothers me.
b3632 will work...plus it has a decay rate.
b3661 also works
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