Tach troubles (1 Viewer)

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Joined
Jun 14, 2005
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Location
Cape Breton, Nova Scotia
I switched a used one in with no success. Today, I pulled and checked the sender and it gave me 480 ohms. Is there a way to check the tach itself? Thanks for any help.

84 BJ60
 
can be a wirring bad contact .. ? happen to me exactly in the plug that comes from the sender to the harness that go to the cabin ..
 
I'm thinking it's in the tach itself as when I turn the key on the needle jumps a little as if it is connected. It just doesn't do it's tacky thing. I just don't know how I can test it.
 
Is the sender a magnetic pickup (ie "counts" flywheel teeth, or the like)? If so, it should give you an AC signal when the engine is running.
 

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