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I have been trading messages with a fellow who is pretty mechanical and just got his first Brick.
It is a 1975 164, and it has an electric Auxiliary Air Valve which he thinks may be faulty.
I have one of the valves on the shelf, used. It was about halfway open at 75°F.
I put it in the freezer for a while, I would guess dropping it to maybe 10-15°F.
At that temp it was about 90% open. Then I took it out and hooked it up to 12 volts and
it closed completely in about 2 or 3 minutes, which is what I think it is
supposed to do.
He measured the voltage on his and reported to me that it was 0.13 volts for about 2 seconds
after starting the car. On three starts it did the same thing.
Not sure what is going on or where this current is coming from (or IF he read it right!).
I have both a 1975 164 green manual and a service manual of new car features for 1975 and
I could not find
anything about a 164 electric AAV in either of them. Since the 240 is a K-jet car I didn't check there.
Do any of you know WHAT is the power source for the electric AAV in the 75 164?
Is it on a fuse, relay, computer terminal or what?
I suggested that he might wire it direct so that whenever the engine is "on" it would have power.
Before I got a functioning thermal AAV for the Yellow Peril I did that with an electric one
and it worked OK. It was a B21F AAV that I piped into the D-jet manifold.
Any insight you guys can give will be greatly appreciated.
Edit:
Another source has questioned whether Bosch did in fact use an electric AAV on any D-jet Volvos.
The answer is, YES, they did, on all 1975 164s and those 1974 164s destined for California.
The Robert Bosch D-jet service manual for Volvos shows this item by part number,
0 280 140 201, which matches the p/n on the part I have. It looks like a K-jet electric AAV
but is larger and has fittings for 3/4" hoses.
For reasons not clear to me, however it is not mentioned in the 1975 164 green manual I have
nor in the "New Car Features for 1975" green manual.
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