JABrx7

iTrader: (1)

my car is a 1988 T2 it doesn't have any emissions stuff on it it also have the TB mod done to it. a few days ago i start it up and notice that my afr's are around mid 11's and if i rev it up it will stumble and dip into the 10's and even high 9's. when at idle it's pulling between 10-12 vacuum. i looked to see if maybe it was vacuum leak but i didn't find anything.

JABrx7

iTrader: (1)

also no matter what i do to the Variable resistor the afr at idle will not change.

DJGeQue

My Variable Resistor isn't changing my idle mixture either and its at 11AFR all but 14.5 under load. And just a heads up JABrx7, everyone I have found to have this problem while searching has had no smog equipment. And someone always comes along and say the poster should put it back on. Although I still haven't found out why that is the case. There must be some de-smogged cars running leaner then 11.