This could be a case of mistaken identiy...the device to which I refer is
mounted on the front side of the fuel disributor body. I tested it simply by
removing the three pin plug and measuring the resistance between the the
pins as I moved the air flow sensor plate slowly. The resistance was jumpy
rather than being a nice steady change as the sensor plate was depressed
slowly. OK.. how does it come off? For what it's worth, this is the
proceedure outlined in in a VW Fox manual where the setup appears to be
identical to the MB. I've gotten involved with all this be cause the idle
speed is erratic. Sometimes its 600, sometimes 1200 and occasionally 1600.
I've replaced the idle control motor to no avail.
Ok, i see now. The fasteners are 2 torx covered by a plastic measuring
1" X 1/4 " in the outside body of the POT. You must mark the exact POT
position before removing it from the air sensor plate, with a pen,
for instance, because you'll have to put it back at the same position
after cleanning or replacing it. Remove very gently this plastic cover
with a little screwdriver, it's not the circled plastic part, i's the
other, with a soft arc shape. Hope this helps,
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