h22 problem help!!!!!

snwbrdrx19 · Post by **snwbrdrx19** » Thu Nov 02, 2006 12:03 am

heres my problem...if i rev my car up while im at a stop, when the rpms are on their way back down they drop past my idle point(1100) and it seems as though the car kind of chokes then bounces back up to my idle point. very weird i was thinking vacuum but have had no luck. any ideas please help!

deafy · Post by **deafy** » Thu Nov 02, 2006 3:00 pm

Do you have wideband hooked up? If so... datalog that specific portion and it is more than likely way too lean. Also you could check on the IACV duty cycle and maybe raise it a little. Does it do that all the time or only if engine is cold or etc??

snwbrdrx19 · Post by **snwbrdrx19** » Thu Nov 02, 2006 9:47 pm

it only does it when its warmed up but the car runs a little rich when im drivin it, but when the car is cold it doesnt do it could be because of the added fuel. i will def check that out though. what should the iacv been running at duty cycle wise?