89 Mariner V6 Tach Problem

[dashaway]

Hi All,<br /><br />Just found the forums and have read quite a bit, great stuff. My 135 V6 Marathon runs fine, knock on wood, but the tach does not. <br /><br />When I start it, the tach works 90% of the time, within 5 minutes it stops. Sometimes it will start while I'm running, but not often. Any suggestions?

 

[mellowyellow]

Re: 89 Mariner V6 Tach Problem

bad/lose connection probably. trace wires back to<br />regulator/rectifier which is where tach power<br />origionates. are you having any problems charging<br />your battery too? <br />good luck,<br />M.Y.

 

[KCLOST]

Re: 89 Mariner V6 Tach Problem

Most likely a bad connection, assuming your battery is charging properly. I read somewhere that a falty tact can be an indication of loss of voltage during running... You might use a voltmeter to check the voltage at the battery, it should be at least 14+ volts while the engine is running.