Tach issue

[benthooks]

I have a 1995 3.0l outboard with no tach responce the tach zeros with keyon-engine off and getting about 12.5-14 volts on sender wire the Tach is made by faira and i have the setting for pole set to 6p. What is the best way to tell that the tach is good and any suggestions on the tach issue.

 

[jimg984]

Re: Tach issue

has it been working on this motor before?

 

[benthooks]

Re: Tach issue

No this is a diff motor worked fine last season with other motor.

 

[hkeiner]

Re: Tach issue

The below linked troubleshooting guide may help.

http://www.downloadingfiles.co.uk/teleflexfiles/gauges/page342.pdf

 

[verado7]

Re: Tach issue

your new motor is a 12 pole not 6

if your tach reads up 7000 rpm use setting 5

if it reads to 6000 rpm use setting 4

 

[benthooks]

Re: Tach issue

your new motor is a 12 pole not 6

if your tach reads up 7000 rpm use setting 5

if it reads to 6000 rpm use setting 4

I tried 5p matter of fact i tried all settings could this hurt the tach.

Also what type of voltage should I be getting from my Signal wire the grey one.

 

[hkeiner]

Re: Tach issue

Also what type of voltage should I be getting from my Signal wire the grey one.

Have you read the troubleshooting guide linked above? Your question is answered in there.

 

[benthooks]

Re: Tach issue

Have you read the troubleshooting guide linked above? Your question is answered in there.

I have tested it With ACV and at idle i get between 8-10volts AC on the signal wire the trouble shooter only shows a min of 5 VAC at idle what the limits of signal Voltage