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Tachometer pegged at 8000

T

tobaz

New member
Hello. my tach is not working

Hello. my tach is not working right this year. boat runs fine. when i turn on the key the needle peggs all the way over to 8000. and when boat is running it stays there. I checked conection at coil- is good. looked under dash and did a little tug test all secure. now im not real sure how to do a continuity test though. can some please explain to me... thank you
 
"I would start by checking the

"I would start by checking the ground going to the tach, ensure that it is clean and secure."
 
Thanks Mike i rechecked ground

Thanks Mike i rechecked ground and it looks clean and secure.i know how to use a mutimeter just not sure how to test tachometer.. where to put the probes.. Thanks
 
your gauge also could of crapp

your gauge also could of crapped out as well. i accidentally hooked the tach wire improperly and now mine starts at 6000 and redlines at 2000 ha ha. am gonna buy a set of new teleflex gauges.
 
"Put multimeter on the back of

"Put multimeter on the back of the tach and measure volts across +12 and grnd terminals.
Then check volts between grnd on the meter and a known good ground..should be zero.

If you see +12 in the first test and zero in the second, most likely your tach is fried.

The innards of the tach convert a series of pulses into a voltage that the meter displays as RPM. There is no in the field test."
 
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