If mine idles for 30 sec or more it wants to bog a little or a lot but seems to clean out and run fine. Mine has never been ridden slow like 1/4 throttle but will give it a try and see if it does it also. Mine also looks like it been updated there is a name engraved on ecu box Dale something. But being a used sled can not be sure.

 

check your TPS. The TPS failing has been a common issue with the 500 the last few years.

 

Is there a quick way of testing the tps sensor ?

 

Check your primary spring for cracks or breakage. My 2010 broke the last turn off the primary spring and it would basically stall at low speeds. But still run if you got it moving faster.

 

checked it, looks good paint is perfect can't see any cracks.

 

Up date after looking at the primary clutch in the day light i did see would could be a crack so i took out the bolts and sure enough it broke. now im digging though my spring and see if i got one that will work.

 

update , didn't have a orange/black so i checked on a spring chart and i have a new orange/white that had the same start and finish rate's put it in and shes back and now runs like my 2011 . thanks for helping out gents.

 

cool good to know.

 

It's funny what a broken clutch spring will do and even more perplexing is that when broke, actually stays in place and doesn't fling out of there when on/off the gas.

Back in 2005, while warming up my 05' 440 in staging, my sled would engage while on the pipe preheat button. Figured something electrical was to blame. As I get up on the line, I engage preheat button again and sled creeps forward sending me to back row. When flag drops, I pin it with nothing noticeable happening and all seems ok. I raced my ass off that race to get a second and I mosey over to tech inspection and lift the hood and somewhere between the start of the race and tech inspection the piece of broken spring intertwined itself in the longer part and held long enough for me to get on the box. I thought that was amazing, lol. True story !!!

 

good info here, and good to have an idea of what can happen and or what to look for.

 

Second that. I too had a broken primary spring. Ran terrible at low throttle.

 

Ditto.

A serious low end bog with a broken primary spring.

I went with an AC yellow/white replacement.

 

Onmy 2010 500 I have run into a very similar issue a few times. Pull your pipe off take the two screws out that hold your injectors down. Pull your injectors and brake clean the top orifice. Should fix it.

 

never thought about the dirty injector theory, interesting.

 

I actually just had this happen to my primary spring if it wasn't for this thread wouldn't even have thought to look , just trying to decide what one to run now with the 720

 

One more thing to check is the throttle safety wires in the wiring harness that comes down from the handlebars through the steering post, have seen in the post and also down towards the connection the insulation get wore off and then short to the frame.

 

At say 1/4 throttle and at slower cruise speed 20 mph or less engine acts like if its running out of gas starts bogging and I blip the throttle sometimes it gets back going and other times it wants to stall.
If I let right off the gas and come too a stop and let it idle for a second I can not get back going.
ECU has the update.
Full throttle and riding hard seems good.

If mine idles for 30 sec or more it wants to bog a little or a lot but sometimes cleans out and run fine.
Mine has never been ridden slow like 1/4 throttle.
ECU has factory update.

Wife's 500 has same problem :wall:

No problems with clutching.