lean bank 1 and 2

hairdryer · Post by **hairdryer** » Tue Sep 11, 2007 10:12 am

Every now and then (maybe 1 time a month) the check engine light comes on and I get bank 1 and 2 lean.
Seems like it only does it under normal driving and coasting. My ltf's are good and wide open throttle is good.
I have the 93 tune in, it didn't do it with the 87 tune.

07 nbs vortec max, volant cold air intake
U 7194

Post by **06MonteSS** » Tue Sep 11, 2007 10:39 am

got a log to look at, or numbers? what are your ltft numbers at??

hairdryer · Post by **hairdryer** » Tue Sep 11, 2007 12:49 pm

I don't have a log, but I think the ltft's were 0 to +1..

southbeach · Post by **southbeach** » Fri Oct 12, 2007 12:28 pm

i have same problem that my 07 escalade shows check engine light, and error codes shows lean bank1 and or lean bank 2 after longer time coasting....

robert

southbeach · Post by **southbeach** » Thu Oct 18, 2007 11:28 am

what inputs do you need additional.

robert

Post by **06MonteSS** » Thu Oct 18, 2007 11:30 am

need to see where your long term fuel trims are at.....

hairdryer · Post by **hairdryer** » Thu Oct 18, 2007 11:59 am

I cleaned my maf and fixed mine. I guess the cold air kit got it oily or something.

southbeach · Post by **southbeach** » Thu Oct 18, 2007 12:53 pm

mine is almost brand new, 4000 miles an just got in "coasting mode" clean bank 1 & 2

lean bank 1 and 2

lean bank 1 and 2

RE: lean bank 1 and 2

RE: lean bank 1 and 2

RE: lean bank 1 and 2

RE: lean bank 1 and 2

RE: lean bank 1 and 2

RE: lean bank 1 and 2

RE: lean bank 1 and 2