jambro303
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- 2009 Yamaha Nytro MTX with Timbersled rear suspension, Cat running boards, Mountaintech A-Arms & skid plate, rollover valve, and a Powder Jack for getting the beast unstuck.
Sorry for the long post, but I figured it would be best to get all the details out in one shot.
So, this past weekend I started getting a code 84 out of the blue. Note that I had trouble with it once the weekend before when the throttle cable was getting tweaked to one side where it enters the throttle housing. In that case the TORS safety worked properly by wavering (revving up and down) and did not allow it to rev up enough to engage the clutch. Once I moved the mountain bar out of the way it worked fine and the code went away. I did try rotating the throttle forward on the bar slightly during the week. This could be totally unrelated but the following weekend I went about a half mile and my oil level warning went off. I think I’ve had a slight leak from my oil filter not sealing properly. It was tight when I put it on, but maybe too tight? Anyway, I topped it off and it was fine most of the day. I added a tiny bit later in the day. So back to the original question…
I started getting the code 84 again after riding about 20 miles and getting stuck and rolling the sled to unstick it a couple times. I have a rollover valve by the way. This time the mountain bar was totally out of the way. The tension on the throttle cable had the recommended amount of play for the TORS sensor. We made sure the cable wasn't kinked anywhere from the throttle body all the way down to where it enters the engine past the 90 degree guide tube. About the same time my engine started running rough and would stall out if sitting at an idle. When I got up to speed it would putter. It was more of the sound coming out the exhaust than an interruption in power. And when I’d pin the throttle it would seem to disappear. I thought maybe it was bad gas but my riding buddy has the same Nytro and the same gas from the same stations.
When I got home I tested the TORS according to the service manual by holding the base of the thumb throttle away from the pivot point, which is supposed to trigger the TORS to throw the code and not allow it to rev up and engage the clutch. But this time it was engaging the clutch so I’m thinking the TORS has gone bad. Does anyone have experience with that?
And if the TORS has gone bad, would it have anything to do with how rough it is running when I’m up to speed? Is it related to the TPS?
Can I replace any parts myself and what would I need to order?
Thanks guys!
So, this past weekend I started getting a code 84 out of the blue. Note that I had trouble with it once the weekend before when the throttle cable was getting tweaked to one side where it enters the throttle housing. In that case the TORS safety worked properly by wavering (revving up and down) and did not allow it to rev up enough to engage the clutch. Once I moved the mountain bar out of the way it worked fine and the code went away. I did try rotating the throttle forward on the bar slightly during the week. This could be totally unrelated but the following weekend I went about a half mile and my oil level warning went off. I think I’ve had a slight leak from my oil filter not sealing properly. It was tight when I put it on, but maybe too tight? Anyway, I topped it off and it was fine most of the day. I added a tiny bit later in the day. So back to the original question…
I started getting the code 84 again after riding about 20 miles and getting stuck and rolling the sled to unstick it a couple times. I have a rollover valve by the way. This time the mountain bar was totally out of the way. The tension on the throttle cable had the recommended amount of play for the TORS sensor. We made sure the cable wasn't kinked anywhere from the throttle body all the way down to where it enters the engine past the 90 degree guide tube. About the same time my engine started running rough and would stall out if sitting at an idle. When I got up to speed it would putter. It was more of the sound coming out the exhaust than an interruption in power. And when I’d pin the throttle it would seem to disappear. I thought maybe it was bad gas but my riding buddy has the same Nytro and the same gas from the same stations.
When I got home I tested the TORS according to the service manual by holding the base of the thumb throttle away from the pivot point, which is supposed to trigger the TORS to throw the code and not allow it to rev up and engage the clutch. But this time it was engaging the clutch so I’m thinking the TORS has gone bad. Does anyone have experience with that?
And if the TORS has gone bad, would it have anything to do with how rough it is running when I’m up to speed? Is it related to the TPS?
Can I replace any parts myself and what would I need to order?
Thanks guys!
yamahamm
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- 2008 yamaha nytro mtx mcx 270
I would bypass the tors if i was you. you don't need it since you have a tether.
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- 2020 Sidewinder SRX
I worked on a Apex that was doing the same thing this last weekend. Reset the cable to get the TORS to stop sending codes and it was stilling running rough. I was going to change the TPS and replaced the plugs to be sure and it fixed the problem.
