| Author |
Message |
    
Chuck Bozeman
Member
Username: cbozeman
Post Number: 6
Registered: 12-2006
| | Posted on Tuesday, July 28, 2009 - 10:15 pm: | 
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I bought a boat with this engine about 3 months ago and tach worked fine. Started acting up couple weeks ago and now doesn't work at all. When you turn the ignition key to "On" the tack moves to zero, when you start the engine it jumps to 3-4K rpm and then falls back to zero. |
IBNFISHN
Advanced Member
Username: ibnfshn
Post Number: 658
Registered: 11-2005
| | Posted on Wednesday, July 29, 2009 - 08:33 pm: |
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Test your rectifier/regulator. |
Chuck Bozeman
Member
Username: cbozeman
Post Number: 9
Registered: 12-2006
| | Posted on Wednesday, July 29, 2009 - 09:01 pm: |
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I did check to make sure it was charging. It's putting out 14 volts so I assume it's working. |
Chuck Bozeman
Member
Username: cbozeman
Post Number: 10
Registered: 12-2006
| | Posted on Monday, August 03, 2009 - 10:15 pm: |
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Did some more troubleshooting, I have battery voltage at the tach ground and power terminals. At engine idle, signal voltage is 5.8 V. at 2500 rpm signal voltage is 6.5 V. I'm assuming the tach is bad. Anyone want to confirm? |
rick riddle
Member
Username: rickriddle
Post Number: 16
Registered: 06-2006
| | Posted on Tuesday, August 11, 2009 - 11:47 pm: |
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If your signal voltage is changing and your tack is not working and it has 12v and ground connected, sounds like you have a bad tack or a broken or bad connection. I would check all my connection and wiring before replacing. |
