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91 200Q wastgate freq valve
In message <TCPSMTP.firstname.lastname@example.org> email@example.com writes:
> Do any of you guys know if the frequency valve is normally open, or
> normally closed, without power. Mine is out of the car and open, I
> believe it should be closed, so I've ordered a new one from clair $60.00
On the 1989/1990 ur-quattro, you can exercise the valve from the fuel pump
relay. It's possible you have the same style of ECU - maybe someone can help.
On the ur-quattro, you stick a fuse into the top of the fuel pump relay and
then switch on the ignition. One of the electrical components (I think the
first is the fuel pump itself) will be "exercised". Pull the fuse for four
seconds, replace it, and another one will start. I think it's the cold start
valve. Whatever. As you proceed, one of the components selected will be the
wastegate control valve. It's not so much a question of open vs. closed - it's
a crossover valve.
Committee Member, UK Audi [ur-]quattro Owners Club