No Start (Cold) Fix (?)

[StevensPoint]

This is a good 22min video for those with the no start when cold problem. What it boils down to is voltage and throttle. Testing was done at -40.

First off, your battery needs to have proper voltage when cold. This can be accomplished by finding a better replacement battery or by carrying a booster pack around. I believe the ECU requires higher voltage than the stock battery puts out when bitter cold.

Second is that you need to give just a little throttle input during the cold start.

In a perfect world the stock battery would have higher voltage when really cold and throttle input would not be necessary when starting a fuel injected four stroke. For those with real problems you can invest in a high quality battery (Odyssey, Batteries Plus X2, Lithium?), anything that maintains its voltage better when cold. Yamaha will likely be coming out with a reflash to resolve the throttle input issue, but I doubt a reflash will lower the voltage requirements of the ECU.


http://www.youtube.com/watch?v=smG4i-oB ... rJDwMroP4A

 

[viperporn]

Same problem I am having.

 

[wot-75]

This is a good 22min video for those with the no start when cold problem. What it boils down to is voltage and throttle. Testing was done at -40.

First off, your battery needs to have proper voltage when cold. This can be accomplished by finding a better replacement battery or by carrying a booster pack around. I believe the ECU requires higher voltage than the stock battery puts out when bitter cold.

Second is that you need to give just a little throttle input during the cold start.

In a perfect world the stock battery would have higher voltage when really cold and throttle input would not be necessary when starting a fuel injected four stroke. For those with real problems you can invest in a high quality battery (Odyssey, Batteries Plus X2, Lithium?), anything that maintains its voltage better when cold. Yamaha will likely be coming out with a reflash to resolve the throttle input issue, but I doubt a reflash will lower the voltage requirements of the ECU.


http://www.youtube.com/watch?v=smG4i-oB ... rJDwMroP4A

huh, at -20f my LTX base model fired right up. I do keep it on a Noco charger and in a trailer in between rides though. I've not tried -40 though and hope not to have to! lol

Where/when were you testing at -40? Just curious.

 

[nickleuci]

The video was made by Alan up in Yellowknife. Maybe he'll chime in and give an update.

 

[StevensPoint]

This is a good 22min video for those with the no start when cold problem. What it boils down to is voltage and throttle. Testing was done at -40.

First off, your battery needs to have proper voltage when cold. This can be accomplished by finding a better replacement battery or by carrying a booster pack around. I believe the ECU requires higher voltage than the stock battery puts out when bitter cold.

Second is that you need to give just a little throttle input during the cold start.

In a perfect world the stock battery would have higher voltage when really cold and throttle input would not be necessary when starting a fuel injected four stroke. For those with real problems you can invest in a high quality battery (Odyssey, Batteries Plus X2, Lithium?), anything that maintains its voltage better when cold. Yamaha will likely be coming out with a reflash to resolve the throttle input issue, but I doubt a reflash will lower the voltage requirements of the ECU.


http://www.youtube.com/watch?v=smG4i-oB ... rJDwMroP4A

huh, at -20f my LTX base model fired right up. I do keep it on a Noco charger and in a trailer in between rides though. I've not tried -40 though and hope not to have to! lol

Where/when were you testing at -40? Just curious.

Testing was not done by me. It was completed by a lucky guy in Yelowknife that gets to snowmobile 6 months out of the year.