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Post by 926am on Apr 15, 2018 13:53:22 GMT -5
Electric fan is not coming on when gauge reads in red zone.
Things I have tested for:
Jumped battery direct to fan (fan works strong)
Checked radiator thermo senso for closed circuit (continuity) when hot (was good)
Checked all ground wires (good)
Checked for voltage at fan & thermo (12.7v at idle, 11.9v not running)
I have read about is if stator can’t generate enough amps Fan may not come on. How would I check for this?
Am I missing anything?
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Post by cyborg55 on Apr 15, 2018 19:45:50 GMT -5
The thermostatic switch is not working
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Post by 926am on Apr 16, 2018 18:50:39 GMT -5
The thermostatic switch tested functional. It was open circuit (no continuity) when cold & closed circuit (continuity) when hot.
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Post by chewbaca on Apr 17, 2018 3:54:50 GMT -5
either the thermostat switch is wrong or the temperature gage is wrong
test the thermostat in a pot of water on the stove with a thermometer
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Post by oldchopperguy on Apr 19, 2018 0:18:04 GMT -5
Chewbaca,
Great call! Have a bone on the Old Chopper Guy!
After more than a half-century of riding, I'm STILL not used to liquid-cooled bikes... LOL! I wouldn't have thought about the temp gauge being out of whack...
With our 100-degree plus summers, I've thought about installing a "traditional" analog temp gauge on my Kymco 250 just as a "backup". "Minnie Mouse" (old '07 Grandvista) uses a digital dashboard that resembles something out of Darth Vader's bathroom... LOL! Very cool, but gimmie good old round, 1950's analog gauges with a pointer and numbers every time... Even twist them so the needles all point vertical when all is normal so any pointer NOT straight up and down gets noticed quickly.
I am NOT a fan of "bar graph" tachometers, temp gauges, etc. At least the old mouse has a digital speedo that reads actual NUMBERS... LOL!
This post reminds me of the value of having a quality, old-school temp gauge in the teensy radiator of our watercooled scoots just for safety. Not too hard to do and gives extra peace of mind. Come to think of it, I wouldn't mind a traditional old round analog tach too. I love my trouble-free scoot, but truly dislike those bar-graph gauges. Just me, but I'll bet there are others out there.
Keep the old teakettle from boiling, and ride safe!
Leo in Texas
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Post by tromper on Apr 19, 2018 7:21:14 GMT -5
Maybe have an air bubble or somesuch?
If you haven't ever descaled the system it won't hurt at worst.
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Post by 926am on Apr 19, 2018 16:52:41 GMT -5
Thanks for the help guys. It’s great to hear things I might not have thought of. It ended up a broken ground wire. This was one of those problems I chased.
Here’s the saga:
Steam coming from hoses,( must be hoses or clamps.) While hoses are on order, I check fan (its bad.) New fan installed, but still not coming on, test for ground wire & sensor (ground wire tests bad.) Run dedicated wire and run engine (fan still doesn’t come on.) Replace sensor, start considering weak current not turning fan (is that even possible?!?) Decide to re-check ground wire and it’s loose (enough to loose connection.)
Man! Now can I have some above 40’s to enjoy this thing?!?
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Post by superjew78 on May 3, 2018 20:29:23 GMT -5
how did you find a bad ground wire? i am having this same issue and i cant track this damn thing down 926am |
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