Code 14, Low idle and small backfire. Suggestions?

[JP10]

Hi everyone,

I experienced a few small issues with my sled today, although she still runs fine with regular performance. I rode the rest of the day and I'm wondering if I should be OK to continues for the next 2 days. I think I should be fine. If anyone has any thoughts on these issues noted below that would be great.

- Fault code 14: Cylinder#1 (clutch side) air intake pressure sensor: hose system malfunction (clogged or detached hose). I should note that while I was removing the airbox this past spring (to access starting motor through front frame removal), I forgot to unhook the hoses running to but sensors and cracked off the nipple (??). I glued them back together and they visually look OK, No visible Blockage. This was the first ride since then and the sled ran for about 10 km, and idled for close to a half hour (warm-up, loading trailer, post oil change, etc) before the code flashed.

- Low idle: Some times but not always the sled would idle low, about 1600 rpm, down to 1300-1400. Three or four times she dipped below 1300 and the engine died. When this happens, it is a bit hard to restart and I have to jump on the throttle right away to keep it from dying. However, other times the engine idled around 1800 like it's supposed to. I'm going to adjust the idle up to about 1900 rpms to see if that makes a difference for tomorrow.

- Small backfire: When I let off the throttle and deccelerate, I can hear 1-3 small backfire pops, however they are not very loud.

I'm wondering if any of these issues could be interelated. I have seen the other post about the decel backfire, where someone experienced error 13 which is the air intake pressure sensor error. I also note that an exhaust leak (donuts) could be the source of this issue.

I think I'm going to ride it tomorrow, I'll let ya know how it turns out!

Thanks,

JP

 

[cannondale27]

I think you know that gluing those sensors is the problem.I would call around since I think most of the Yamaha sensors are same.If you locate one I would first try using a paperclip or small drill try to get the glue out of yours.You probably know that doing this you risk ruining the sensor if you go to deep but worth chance.If it doesnt work and its ruined just buy the new one.

 

[ATV PRO #11]

It's probably the wires to the sensors. CODE 13 There super thin and mine started like that until it got to the point where they wigled themselves apart and she went into limp mode. Had to hold the throttle to keep it running. Would still have power but not full power ect.
I took picks of how I jumped the wiring. Over 600 kms on it this season on the fix. Had Yamaha solder/fix last years issue and it broke apart again. This time I did it alot different....

 

[yamahas]

I think you know that gluing those sensors is the problem.I would call around since I think most of the Yamaha sensors are same.If you locate one I would first try using a paperclip or small drill try to get the glue out of yours.You probably know that doing this you risk ruining the sensor if you go to deep but worth chance.If it doesnt work and its ruined just buy the new one.

X2. Also I believe the other end of the hose can come loose as well. If you pulled by accident it is a possibility.

 

[Lashcat]

The fumes from the glue could have messed up the sensor. I know on auto engines you have to use the right type RTV or you will screw up the oxygen sensor. If it is clogged or comes loose it will caus ethe same issues. A code 13, I would check the wiring and code 14, I would check the hose. I battled these when I was installing the supercharger. I had to spice into the harness. I had a bad solder joint. It caused me a bit of grief until I found it. Then once I got that strait the hose came off.

 

[JP10]

I continued riding for the rest of the weekend 500+ km. Same syptons continued, although it seemed to get a bit harder to start.

I took apart the sled this evening to find the problem and sure enough the glue let go on one of the sensors that I glued together....

Guess it's time to get two new air intake sensors then.


JP

 

[Lashcat]

Thye are $91 each. That is a lot of muney to spend because of broken plastic.

 

[yamahas]

You could probably get it off a part out sled.