09 Phazer RTX overheating

[yamahas]

I purchaced my sled late winter early spring last season and my overheat light kept comming on. finaly i cheaked to see if it was low in coolanty but it wasent low enough to cause a problem, i added water. it came wit the rad fan on stock so thats not the issue, i got fed up with the overheating so i took off the side cover to compleatly expose the rad, i was riging in tempatures around 0 to 10 degrees CELCIUS.

any ideas?

 

[Len Todd]

It could be that you have to bleed the air out of the cooling system. Do you know how to do that?

Also, you did not describe the trail conditions when it was overheating. You need loose snow to cool these. Riding on Frozen hard-pack does not cool it. If you are stuck on frozen hard-pack, frequently dip off the trail to cool it.

Is the fan working correctly?

Also, the anti-freeze should be a 50/50 blend with water. A product called Watter Wetter also helps.

But, ... overheating in loose snow is not typical. So, I would start with bleeding the cooling system.

 

[yamahas]

There is no rear heat exchanger, the cooling happens like a car the rad in the wind type thing the fan kicks in when nessasary... i will try and reserch how to bleed the system but if anyone knows please help me out!

thanks

 

[Len Todd]

There is a heat exchanger in the front of the tunnel (25 8GC-12440-00-00 HEAT EXCHANGER ASSY). There are two connections to it. They are near the top. It may be self-bleeding. So, ... maybe bleeding it is not necessary. But, it requires loose snow to cool it. Riding in hard packed or icy trails will not adequately cool your sled.

You can see it HEREby plugging in your model, etc. and looking at the "Fame" folder.

 

[yamahas]

Thanks, i wasent aware there was a heat exchanger in the tunnel, i was riding in lose wet snow... woud you be able to explain to me how to bleed the system i know thers a bleed valve on a hose close to the coolant resevoir..

thanks a lot

 

[Len Todd]

Like I said, it looks like the cooling system would self-bleed because the Tank is right at the top of the exchanger. But, ... Did you test the Thermostat? To do that, you remove it and place it in a pan of water. Heat the water to > 185 degrees F. At ~ 185 degrees F the thermostat should be fully open. If the Thermostat is working and the coolant is full and the fan is running, then you should be cooling, in loose snow. How is your Hyfax holding up?

The other two significant cooling system components would be the coolant pump and the oil cooler. But, if the coolant pump is not leaking coolant, then it should be safe to assume it is working. The oil cooler could possibly have some air in it. But I doubt it. To check that you could slightly loosen the top hose a bit and see if coolant leaks out. But, like I said, I would not normally suspect that unless there was recent engine work performed that required draining of the coolant, etc.. Even then, I think it would self-prime.

 

[yamahas]

I think i might just bring it into the dealership, does anyone know how the warrenty works in canada? i bought my sled out of town and i saw many people having trouble with the warrenty stuff. i think i should be able to bring it in for free right? il just tell them to fix it and pick it up after.

thanks for the help.

 

[Len Todd]

If you have a one-year or greater warranty, the dealer should check it out. Even if the sled is out of warranty, the dealer is always the best place to check with first anyway. They may have a Bulletin or Recall going on.

I always try to buy local. Buying local "opens the service doors."

 

[yamahas]

they know me by name from other snowmobiles i brought there for service/ my dad purchased one there, i purchaced mine at the end of season and there was a great deal out of town and they local dealership had sold their last 09 phazer.

 

[Len Todd]

Then, you should be good to go. Good Luck!

 

[mx1500]

add a fan by-pass switch. i did that to mine and when i ride in hot or loose snow i just flick it on. and make sure you dont have snow built up on the outside of your rad. the part thats exposed to the elements

 

[Len Todd]

... make sure you don't have snow built up on the outside of your rad. the part thats exposed to the elements

Interesting point. If Ice forms a shield over the heat exchanger, snow can not get to it to cool it.

 

[yamahas]

I think yamaha had a good idea with the system BUT, i noticed when at idle the fan will kick in and kick off when nessasary when the side cover is off, i reinstall the cover and the fan turns on then never turns off, remember this is at idle. is this normal? i am thinking of just installing a rear heat exchanger along the tunnel like a onventional sled if i have this problem again come the snow. I realize i was riding in tempatures well above freezing. i might just give a another try im just afraid of ending up phazerless while its in the shop and the snows flying

 

[marpolsdofer]

At the current temp outside now. Mine would kick on about 10 min apart for only 1-2 min.

 

[yamahas]

at idle? what is the tempature outside where you are? im just not sure if it was notmal to overheat every half hour? in tempatures of 10 degrees C on loose snow? and is it usual for the phazer to overheat offen during the break in period? and i should stop worrying about it untill the break in period is done?