Volvo penta 5.7L GSi 2000 Tachymeter stop working after about 10 minutes

[cally725]

My starbord tachtmeter stop working when the engine becomes hot afer about 10 minutes. The Sync meter needle then go to complete right of the meter, tach meter indicated 0. I tried swaping the tachs with the port one, but the problems stays on the starbord side.

Any idea ?

 

[Scott Danforth]

you lost a connection at the coil on the starboard motor. its the grey wire

 

[cally725]

Thanks, what kind of signal it is ? Can I use a DC multimeter to find where the signal is lost ? What kind of voltage should I get at idile ?

 

[Scott Danforth]

Its a pulsing signal. One pulse per cylinder firing, or 4 pulses per revolution.

However you should see the issue. Its either the cinnection at the coil, or its connection at main harness connector

 

[cally725]

Ok Thanks I will inspect this week end...