[kdjones2000]

So this POS called Bosch Motronic "adaptive idle speed volumetric efficiency regulation" is possibly the world's worst engine manage system.

No matter what I do to this thing, I cannot prevent the car from randomly stalling when coming off revs while the A/C is engaged. At least one time during any short local road trip, this f*cking Motronic unit will forget that the car actually needs to idle at its preset RPM, and allow the engine to stumble and stall.

Sometimes it's from a low RPM to idle, others from high revs to idle, but stall it does.

Everything in my power has been done to make this thing work like it should: Valve job, good compression, NTCII checked, fuel pressure in spec, new O2 sensor, good injectors, plugs/rotor/cap, all new hoses, new gaskets, evap system checked, AOS checked, throttle body reseal, TPS checked, cleaned ICV (not ISV, that is for engines that actually work properly apparently). There are no adjustments possible on this system for idle, and even minor adjustments to the throttle body stop result in poor running.

Car runs fine otherwise, and idles great with the A/C off. They just totally failed on this system with A/C which is required in this part of the world.

Stoooopid Germans on this system..... BOOOOOOOO!!!!

Alright, end of rant.