HOMEHARDWARE65
Expert
ok so I have put on over 800 miles so far this season with no problems. went out yesterdayin perfect conditions and was fine for about 30 miles. Stopped for lunch, got back out on the trail and 5 minutes later my temp light came on. I stopped and let it cool off, I continued on and my heat light came right back on. Kept doing this for about 50 miles, and it got so hot it boiled most of the coolent out of the overflow. In a trail side emergency I dumped a bunch of vodka, 7-up and flavoured water in it. But here is the real mystery. I took my hood off and It would run completly perfect and not heat up at all, then as soon as I put the hood back on it would heat up in like 2 minutes. please help, what could the problem be.
thanks
thanks
APEX 06
TY 4 Stroke God
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What was the out side air temp, is something blocking a vent
09nytro
TY 4 Stroke God
Check the fuse for the fan
mach9
TY 4 Stroke Master
Maybe was a little low on coolant before your last ride.
Flush out the system and fill it up try again.
Flush out the system and fill it up try again.
HOMEHARDWARE65
Expert
the outside air temp was -18 celcuis so not warm by any means and is the fan fuse in the fuse box by the break rotor?
beeze455
Expert
My guess is air in the system or bad radiator cap. Was anybody else getting any overheating lights or anything?
nytroman20
Expert
Mine kept pouring out the overflow and emptying the rad. Temp light would come on after 30 mins also. Ended up being the head gasket.
HOMEHARDWARE65
Expert
nobody else was overheating but what I'm worried about is that last year i put a stud through the heat exhanger and accidentally drove it for like 10 miles not knowing and that would have been pretty hard on the water pump. So, i'm worried that the water pump maybe went in it. I have also read that the rad or thermastat could be plugged?
grizztracks
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Because the relays have been so problematic on theses sleds I would replace the fan relay just to make sure it's not acting up. What did you do to fix the exchanger? You may want to recheck it for leaks. If a fuse blows there's normally an underlying problem that needs corrected.
Apex2006
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x2 on the fan fuse. Had it happen to me with the same symptom. Fuse box right side 10amp. Box has a spare. Hard to tell when the fan is spinning but will certainly overheat without it....
HOMEHARDWARE65
Expert
grizztracks said:
I replaced it with a brand new heat exchanger from yamaha and when I started overheating that was the first thing I checked
beeze455
Expert
HOMEHARDWARE65 said:
Was this the first time out with the new exchanger? I still think air in the system. Drain the vodka out and put coolant in and run it for a minutes with the cap off. Did you do this the first time?
grizztracks
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800 miles since the exchanger has been replaced....I doubt it's air in the system. The Nytro tends to burp the air out after a few heat cycles. Make sure you fill the coolant at the radiator then bring the reservoir to the correct level.
Because you can run it with the hood off without overheating I'd lean toward a radiator fan issue. Check fuse, replace the relay and check to make sure the fan blades spin freely. I had my Trail Tank slide forward and actual hit the fan blades.
Because you can run it with the hood off without overheating I'd lean toward a radiator fan issue. Check fuse, replace the relay and check to make sure the fan blades spin freely. I had my Trail Tank slide forward and actual hit the fan blades.
HOMEHARDWARE65
Expert
grizztracks said:
Thanks, I will try that tonight
HOMEHARDWARE65
Expert
found a good sign, the fuse for the fan was blown, but does the fan run all the time or does it come on at a certain temperature?
