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Temperature Gauge Problems?

2238 Views 10 Replies 6 Participants Last post by  jjwelderman
She's up an running like a top!!!

I'm so very happy to be riding again, although I'm taking it easy since it's been so many years since I was last on a bike.

I had a young man change out the mechanical seal (thanks again, Doward!) for me and get her going. Everything seemes to be fine with one exception...

The temp gauge would climb up to the maximum for a few minutes and then come back down to normal, but now it just goes to max after a few minutes of riding (or idling) and stays there. The bike runs fine and I can put my hands on the cylinders and crank case for several seconds so it's not like it's heating up to a meltdown of biblical proportions.

My mechaninc took the thermostat out of the parts bike and tested it before he installed it, and ended up getting an O-ring kit for putting it all back together. I put 42 miles on it without any signs of trouble

Any suggestions?
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Just to add to Reg's post.Measure the voltage using a multimeter set to 20v DC between the Blue/Green wire and a good ground point with the ignition on
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Well I checked it and got a whopping 0.53 volts so that sounds like it may be the problem. I'll get an infrared sensor on the crankcase and cylinders tomorrow to be sure. I'll also recheck the voltage as it was getting dark and I'd had a belt or two to double check.

It sure is great to be riding again!!!

I always check my Cylinder temps at the back of the cylinders in the middle of a water jacket and they are around 80/85 Deg C to avoid a false reading because of the exhausts at idle and because I have an Electric Fan conversion they will rise a little and fall as the Fan cuts in.
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