Tachometer all over the place

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T & D Morris
Member
Posts: 29
Hi
My Tacho started playing up last week.
It is jumping all over the dial.

Has anyone had the same problem and managed to fix it?


Thanks

Terry & Deb
October 4, 2010 at 8:59 PM Flag Quote & Reply

Paul & Sue Crompton
Member
Posts: 44
My tacho has played up in the past and the 2 things which caused it were either a loose fan belt or water spray would make it slip as the tacho is driven by the back of the alternator. If there is a problem with the alternator not charging correctly, this will also send the tacho out. Hope this is of some use.
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Paul & Sue Crompton

October 4, 2010 at 9:52 PM Flag Quote & Reply

Garry & Chris
Member
Posts: 104
G'day Paul
Check the connector at back of Alternator I had that problem When Tacho stopped it also stopped charging
Bit hard to explain but was just a loose single wire connector
October 4, 2010 at 10:52 PM Flag Quote & Reply

Aussie Bight Expeditions
Member
Posts: 109
Yes the problem will be the connector that goes into the alternator, there are 2 wires that go in and most likely one will be broken and not contacting all the time hence the bouncing of the Tacho. One should also see that the red light for charge can also flicker and that it will not possible be charging correctly too as it runs the Volt meter as well for charge. I have noticed that when mine went last time. Happens regularly with being in salt water quite regularly due to not getting washed it corrodes. Now have it surrounded by Lanolin and has not happened since. If you look at it carefully on can reuse the connection by putting a fine object up the unit and prizing the keeper back and so on.
Some good Electrical repair shops have the clips for the Electrical end which makes the job easier
Hope this helps also
ABE Tony
Esperance
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October 4, 2010 at 11:36 PM