tires changed and bike runs like crap

[johnyamaha]

hello gentleman. I have a problem. I had my tires changed at a local Honda shop. no triumph shops around. I road for 20 miles and the bike started to rev from 1000 rpm to 3000 rpm non stop, up down up down. while it does that it back fires like crazy. even in gear and throttle on, very eratic and back firing. Could they have knocked something lose or just coinsidance.
I would appreciate some direction. I have a tune boy tune in it, cat box gone and D&D pipes three into two. Its a 2006 classic, I always had the idle problem going from 2000 rpm down to 1000 at a stop light. I thought the tune boy program would fix it but it didn't. Thanks for any help

 

[Blastedbones]

TPS outa whack. quite how a tyre change shoulda made it worse, I can only guess they've managed to bang the sensor on something. Get a new sensor & set it with tuneboy.

 

[johnyamaha]

thanks for the info. I was thinking the tps after reading some of the threads on the site. But I wasn't to sure if the bad tps could cause the back firing.

 

[Triple Trouble]

You can use the TuneBoy program to check the TPS voltage against the specs. Can't help thinking how much better the bike would run though if your name was johnrocket )
If you are running the original TPS with the black insides then it is probably time to change to the newer style with the blue innards. One thing that points to the TPS would be if the idle problem goes away briefly if you switch off and start it up again.

 

[Blastedbones]

thanks for the info. I was thinking the tps after reading some of the threads on the site. But I wasn't to sure if the bad tps could cause the back firing.

The backfiring running horrible, is due to the ECU misjudging the throttle position, so that the fuel injected for air intake gets totally screwy. The exact symptoms happened to me after shaking the TPS outa whack after running down a really bumpy road & cattle grids at speed.( Was the original TPS & the new ones are improved.)

 

[zimtuff]

You can use the TuneBoy program to check the TPS voltage against the specs. Can't help thinking how much better the bike would run though if your name was johnrocket )
If you are running the original TPS with the black insides then it is probably time to change to the newer style with the blue innards. One thing that points to the TPS would be if the idle problem goes away briefly if you switch off and start it up again.

Is it possible to see what colour TPS you have without pulling it apart? Sometimes my RPMs at idle fluctuate a little

 

[Captain Rich]

The color is on the actuator arm and can only be seen by removing it from the bike. Sorry.

 

[johnyamaha]

Ya that name has stuck with me since I used to race enduro's on a yamaha. It used to be enduroman till I saw someone with that name on my favorite **** site LMAO.
Thanks for the info.

 

[berrypicker]

i take it they didnt jack / block the bike on the crank sensor :eek3: ,check its not damaged

 

[Blastedbones]

The color is on the actuator arm and can only be seen by removing it from the bike. Sorry.

Not hard to pop off the TPS, just need a Torx set.