drove a little more today. CEL again for running lean. again after driving 9-ish miles.
i tightened the upper intake a little bit. any other suggestions to try similar to that?
i bet it may be due to the retarded way i have the mustang maf attached to the stock intake tube. i have a rubber coupler shove inside the tube and in the maf. no clamps, doesnt fit perfectly, slips around when driving. prob lets in air no accounted for by the maf. old engine didnt seem to care about it, unless by luck i had it sealed better before.
the idle seems to surge for a bit, jump itself to 1100 then settle at 800 nice and steady. no matter warm or cold. or if i was just driving or not, as soon as it goes in park it does that.
a homeless guy i know that panhandles at my old job, REALLY good mechanic(alcohol problems), said my idle was set to low, ive been trying to mess with it, make it lump more. and that my IAC may be dirty.
i cleaned the MAF sensor, but forgot to clean the IAC, so ill try that and see what happens.
im gonna drive it to work tomorrow. last mpg test came back 8.23mpg. 87 with stp octane additive, 2.5gal 89, another 2gal of 89. is whats been in the tank. so i guess its running 89 with the additive.
any harm in buying the 108 octane, not for street use, additive and testing it?
