Tach quit working

[mikebc]

I think my tack is shot, it worked 1/2 the time until yesterday, now nothing. I checked all the connections on the back of the tach, good ground, good 13.5volts, and I get a variable voltage on the gray wire, from 6 volts up, depending on my rpms. The needle just sits at 0 on the tach. Is the variable voltage normal, and if so what is the norman range? Does this sound like how a tach dies? Thanks, Mike

 

[mikebc]

Re: Tach quit working

Is it possible to test the tach some how?

 

[nms1991]

Re: Tach quit working

The grey wire is the signal wire for the tach. Tachs sometimes just die or they fluctuate then die but it sounds if tho as you need a new tach. Most mechanics have a shop tach to check the system with.

 

[Bondo]

Re: Tach quit working

Tachs sometimes just die or they fluctuate then die but it sounds if tho as you need a new tach.

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