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What Are These?
Posted: Mon Apr 21, 2014 10:16 pm
by Eddie.
Engine is an M20B25 from an early E30 325i.
This plug:
And these two:
Would be much appreciated.
Re: What Are These?
Posted: Mon Apr 21, 2014 10:40 pm
by polov8
given the pipe stub/hole combo are before and after the throttle valve, my guess is there's an idle stablisation valve (ISV) missing, and that 3 pin plug would be right for a typical bosch ISV.
Edit, yup, here ya go:
That bracket in your pic with the rectangular hole is what supports it.
Re: What Are These?
Posted: Mon Apr 21, 2014 11:17 pm
by Jeroen
The plug is for a sensor for barometric pressure, afaik you can do without it. Small black box that is normally mounted on the bracket for the air filter housing as you can see below
The intake openings are for the idle control valve indeed, also see here:
