Engine stall after open thottle - IAC config problem?
We did the setup for the engine, which start after some tune of afterstart enrichment because of the dense mixture. The idle is acceptable, but we have some problem with the bwm dual solenoid.
This is a half-open valve when unpowered, so when plugged off the rpm goes sky high. So for idle need about 40 value in reftable, and we must enable iac follow tps because withouth this engine often stall after small blip of the throttle.
After tuned VE table the avability to stall after open throttle remains, so I need some help if anybody has experience with this iac valve.
(I prefered the manual idle set with extra air pipe or with throttle open screw, and vems iac control for crank, warmup and extra load, but this engine stall without idle control)
This is strange. Newer saw BMW dual valve with spring inside!
From my experience this type of valve is more predictable than 2-pin ones.
I suggest enable advance aid for idle. And lower P to something about 15-30, put I about 15-20, D ~100.
But first check your valve!
Gints
