I only just learned about the screws you mentioned. None I had apart had them. Apparently they can be used to move the mixture around. But CAREFULLY as I understand it.
Actually, if someone wanted to 'hotrod' around with the CIS the lambda unit lends itself. All ya gotta do is send different signals to the frequency valve and change the lower chamber pressure. It has significant control of the mixture. Not all that different than sending a signal to an electomechanical fuel injector.
FWIW. Ken told me the shop used a test light and determined that there was no power to the fv. Using a voltmeter I came up with almost the same thing. Only showed about 8 volts at the FV connector. Had a solid 12+ at the relay and the ground side of the FV checked good. I knew from the wiring diagram that the next step was to find that connector and while I'm just pondering how-n-hell I gonna find that; Ken just sorta outa the blue pulls out an message he picked up off the net with the connector location. BINGO! I love it when a plan comes together. Somebody tell Dave Riley he's full of it if he thinks these things are easier to get at than a 944! You too Tony. Anyway, sprayed some tv tuner cleaner nackumpucky on the connector. Hit it with a toothbush. Spread the fingers apart some. Voila! With the fv connected the car now won't run. Success.
The duty cycle actually measured something I did not expect. 65% I think. But hey. Lets don't get greedy right off the bat. I just sure hope this is it.
PS: Pure Magic. A technical term we use to describe how helicopters fly.
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