Throttle body replacement

[Macca]

My 2011 RT Limited TB changed at 600 miles

 

[Allensr]

Wow !!! I thought the throttle body was a passive part,what really goes bad.

 

[NancysToy]

Wow !!! I thought the throttle body was a passive part,what really goes bad.

The throttle body is far from a passive part, with its moving butterflies. In this case, the throttle positioner is part of the assembly, and the positioners are failing. There was also a design change in the throttle body shaft bushings. The original problem for the 2011 Spyders was caused by a change in programming which tightly closed the throttle plates after the Spyder was shut off, to prevent the fuel saturation of the cylinders which caused flooding and hot restart issues. As the Spyder cooled, the tightly closed plates became locked in the throttle bore and the shaft could stick in the bushings. The positioners had a chance of burning out when the throttle plates didn't move readily. The Throttle Body Warranty Campaign reprogrammed the throttle body closing procedure to prevent this.

 

[Pennyrick]

The throttle body is far from a passive part, with its moving butterflies. In this case, the throttle positioner is part of the assembly, and the positioners are failing. There was also a design change in the throttle body shaft bushings. The original problem for the 2011 Spyders was caused by a change in programming which tightly closed the throttle plates after the Spyder was shut off, to prevent the fuel saturation of the cylinders which caused flooding and hot restart issues. As the Spyder cooled, the tightly closed plates became locked in the throttle bore and the shaft could stick in the bushings. The positioners had a chance of burning out when the throttle plates didn't move readily. The Throttle Body Warranty Campaign reprogrammed the throttle body closing procedure to prevent this.

Scotty:

They tell me that my machine should be ready tomorrow and Can Am has approved the replacement of the TB that is coming from the local distributor. I bought the Spyder in June this year and had the firmware upgrade done at the 3,000 mile service in August. The TB failed in December at 9,100 miles but since this was AFTER the upgrade there must have been some other factor that did this puppy in.
I plan to talk to the tech tomorrow to see if I can find out exactly what and why.

 

[NancysToy]

Scotty:

They tell me that my machine should be ready tomorrow and Can Am has approved the replacement of the TB that is coming from the local distributor. I bought the Spyder in June this year and had the firmware upgrade done at the 3,000 mile service in August. The TB failed in December at 9,100 miles but since this was AFTER the upgrade there must have been some other factor that did this puppy in.
I plan to talk to the tech tomorrow to see if I can find out exactly what and why.

I have my suspicions that there is more going on here than just what the reprogramming addresses. For one thing, a number of 2010s are failing, too. I'm sure BRP is searching hard for answers. This is certainly costing them money.

 

[effgjamis]

SCOTTY...... What about the TB module?? It is my understanding that the module is the culpurt in faiing TB.. However, my first failure was due to the butterfly locking in. the second, not too sure but high suspect of Module..

Any inside wisdom to this ???

 

[dancogan]

SCOTTY...... What about the TB module?? It is my understanding that the module is the culpurt in faiing TB.. However, my first failure was due to the butterfly locking in. the second, not too sure but high suspect of Module..

Any inside wisdom to this ???

I don't know a throttle body from a carburetor but when mine went south they told me it was the throttle position sensor. That is a smaller, much less expensive part of the entire throttle body. However, since the sensor was not available at the time they replaced the entire throttle body. FWIW

 

[NancysToy]

SCOTTY...... What about the TB module?? It is my understanding that the module is the culpurt in faiing TB.. However, my first failure was due to the butterfly locking in. the second, not too sure but high suspect of Module..

Any inside wisdom to this ???

If by module, you mean either the position sensor or the positioner, it is my understanding that the positioner is the part that was failing on the 2011s. I can't speak to any other failures. There have been some mechanical failures, but I don't have any details on what failed. exactly. I could guess, but I'd rather not say.

 

[Lamonster]

The throttle body is far from a passive part, with its moving butterflies. In this case, the throttle positioner is part of the assembly, and the positioners are failing. There was also a design change in the throttle body shaft bushings. The original problem for the 2011 Spyders was caused by a change in programming which tightly closed the throttle plates after the Spyder was shut off, to prevent the fuel saturation of the cylinders which caused flooding and hot restart issues. As the Spyder cooled, the tightly closed plates became locked in the throttle bore and the shaft could stick in the bushings. The positioners had a chance of burning out when the throttle plates didn't move readily. The Throttle Body Warranty Campaign reprogrammed the throttle body closing procedure to prevent this.

The fuel injectors are below the throttle plates so closing them off wouldn't do anything for that and once the Spyder is turned off there is no fuel getting past the injectors.

This has more to do with valve overlap and hot gases getting into the air box through the throttle plates and giving a false reading to the sensor. That's why you hear a high pitch squeal for 40 minutes after the Spyder is shut off. The plates are being held shut till the gases cool down.

 

[NancysToy]

The fuel injectors are below the throttle plates so closing them off wouldn't do anything for that and once the Spyder is turned off there is no fuel getting past the injectors.

This has more to do with valve overlap and hot gases getting into the air box through the throttle plates and giving a false reading to the sensor. That's why you hear a high pitch squeal for 40 minutes after the Spyder is shut off. The plates are being held shut till the gases cool down.

Thanks for the explanation. It was explained to me differently. Your explanation makes more sense.

 

[Lamonster]

Thanks for the explanation. It was explained to me differently. Your explanation makes more sense.

:thumbup:

 

[Allensr]

I called dealer yesterday and they told me a replacement part was on order and should be available next week. I will get more info when they do the work.

 

[Allensr]

TB was replaced and Spyder back on road. My shop CTPS said they have worked on five bike that needed this work and none of them have needed additional TB work. One can only hope.
They also told me the stepper motor that seems to be the failure part can not be replaced by the shop,and the complete unit is the remove and replace level.