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Registered
Join Date: Mar 2000
Location: Fort Worth, TX
Posts: 1,295
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Tachometer Testing
Can anyone tell me how to test whether a tachometer is good or not other than instaling it in a car? My tach stopped working and I'm trying to determine if it is a wiring or a tach problem. I got a replacement and it doesnt work either. I am getting +12 volts to the + terminal, a ground to the - terminal and a voltage signal that varies with RPM to the middle contact. Does anyone know what goes "bad" when a tach quits working?
Thanks, JB |
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06-16-2003, 08:50 AM
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I'm in the same boat. I'm thinking of taking my tach apart to see if anything is obvious.
I checked my wiring by connecting a digital multimeter/tach to the lead that plugs into the tach (black/purple wire).
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Chris '75 911s 3.2 - Ice Green Metallic ‘87 951, '05 987 S '21 Jeep Gladiator ‘18 Tesla ModelX 100D, ‘20 Model 3 |
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06-16-2003, 12:23 PM
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1975 Porsche 911s 3.2
