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Registered
Join Date: Sep 2001
Location: Alameda, CA, USA
Posts: 257
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Tach stopped working
Tach stopped working on the drive to work today. It is stuck at 1,000. I am hoping this is a cable issue. What should I check? Any common problems?
Thanks
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Tim '81 Porsche 911SC Targa '00 Audi A6 4.2 '99 Ellsworth Truth '02 Taylor with new Tru Temper S3 and carbon fiber! |
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11-15-2001, 10:09 AM
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Registered
Join Date: May 2000
Location: Auckland, New Zealand
Posts: 1,182
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No cable there! Tach is electronic. Check tach takeoff on side of distributor- may have come adrift. Should be the purple and black wire, assuming your set up is the same as mine.
Other than that, could be tach itself. Give it a tap with your finger?
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'72 911 T/E Silver Targa |
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11-15-2001, 10:45 AM
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Join Date: Dec 1999
Location: TX USA
Posts: 9,804
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Tim,
Take the 6-pin connector loose and then remove your CDI unit. Clean the six Faston (spade) connectors with wire brush or ink eraser. Apply silicone grease to all six lugs/spade connectors on both sides. Reinstall and hope that problem is gone! If problem still there, pull out tach. carefully, and monitor terminal 'TD' with AC Voltmeter, oscilloscope, or pulses function of multimeter or frequency counter while engine is running. If pulse activity present, clean that terminal and connector. Otherwise, the tach. needs servicing.
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Warren Hall, Jr. 1973 911S Targa ... 'Annie' 1968 340S Barracuda ... 'Rolling Thunder' |
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11-15-2001, 11:03 AM
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Registered
Join Date: Sep 2001
Location: Alameda, CA, USA
Posts: 257
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Connector rattled off. Need to tighten it an all will be well.
Thanks!
__________________
Tim '81 Porsche 911SC Targa '00 Audi A6 4.2 '99 Ellsworth Truth '02 Taylor with new Tru Temper S3 and carbon fiber! |
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11-15-2001, 12:40 PM
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