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Registered
Join Date: Sep 2005
Posts: 15
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rev counter 3.0
Hi
we finished (well almost) the 3.0 conversion for my 911 T 1973. only the rev counter is not working anymore,,, common? than ks! |
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11-29-2005, 03:57 AM
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Registered
Join Date: Dec 1999
Location: TX USA
Posts: 9,804
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Did you check the Black/Violet wire at the back of the tach for pulses from the CDI 'TD' output terminal with an oscilloscope or CMOS logic probe?
The Black/Violet wire has to go through the 14-pin connector at the engine electrical [relay/fuse/CDI] panel ... a common problem area where corrosion can be found. Cleaning of the 14-pin connectors should be done very, very carefully, as the terminals are silver-plated brass ... no abrasives! Q-tips with 9% pickling vinegar, isopropyl alcohol ... are safe, followed by rinse with distilled water and air drying.
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Warren Hall, Jr. 1973 911S Targa ... 'Annie' 1968 340S Barracuda ... 'Rolling Thunder' |
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11-29-2005, 09:31 AM
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