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I don't know what type of throttle-position sensor the Motronic DME-controlled system uses, because I have not seen the factory manual, or read the circuit description, but I have a funny 'feeling' that is NOT a variable resistor (potentiometer) type sensor, because of the wide variation in underhood temperatures it would have to work under.
What I do know is that the earlier D- and L-Jetronic systems used a switch-type sensor that generated a series of ground pulses directly dependent on the angle the shaft was turned.
My suggestion would be to contact Electromotive to see what sensors are compatible. They ARE still in business, right?
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Warren Hall
1973 911S Targa
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