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Temp gauge 03 Mercruiser

M

m1313on

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I need advise on troubleshooti

I need advise on troubleshooting temp gauge.Gauge does not register at all. Thanks
 
"Go to the sender and see if t

"Go to the sender and see if the wire came off. If it did, reconnect it and turn the key ON. Connect the ring terminal to ground briefly and see if the gauge shoots up. If it does, the gauge is good. Run it and see if you have any change."
 
Ground the wire on at the ther

Ground the wire on at the thermostat and make sure the gauge maxes out. If it doesn't then the problem is the gauge itself. I troubleshot mine and it was the actual wire that was bad...took awhile to figure that one out.
 
"Sender, not thermostat. As Ru

"Sender, not thermostat. As Russ said, if you need to bypass the wire going to the sender, you can go directly from the gauge to the sender.

By grounding the sender post on the gauge and the sender wire at the sender, it saves a lot of time. If it works when you test it at the gauge and when you bypass the wire but not when you test it at the sender, you will have determined that the wire is bad."
 
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