.: XT660.com - The #1 XT660 Resource :. - Faulty ECU affected range

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- - Faulty ECU affected range ( https://www.xt660.com/showthread.php?t=519)

I'm not sure what the issues are with the faulty ECU's but is the engine cutting off when downshifting sometimes one of them?

I have a 2004 xtr, which has surging issues also but mainly the engine cuts out at the worst times (always when downshifting). The surging doesn't phase me, I accept it for what it is.

Just had a new battery installed last week that didn't fix the problem.

How much would it cost me to fix this issue? Cheers.

Quote:

Originally Posted by tigerbloodz (Post 209904)

Cutting out when downshifting can more often than not can be attributed to a low tick-over or idle speed. Make sure your idle is set to around the 1450-1500rpm mark on a warm engine.

If you want to get the rev counter to display in the dash, follow this link:

http://www.xt660.com/showpost.php?p=4194&postcount=4

If you haven�t already read this thread, it pretty much covers everything you can do to minimise surging, cutting out and general rough running:

http://www.xt660.com/showthread.php?t=23042

Quote:

Originally Posted by CaptMoto (Post 2402)

The 2 attached documents I have got from JMC are leaked internal Yamaha UK memos to all dealerships and service workshops.

They show the range of the faulty ECU's up to frame number related, best thing to do is to check if your frame number falls within this range and if so print these 2 documents and take them to your dealer and they shall have no problem in sorting you out with a new ECU

The quality is not perfect but you can just about make out the frame numbers. Sorry but this was obtained by a mechanic and not officially from Yamaha.

For the benefit of all please note these are the affected frame numbers

XT660R Up to frame no. DM015-007858
XT660X Up to frame no. DM014-006257

And thanks very much to JMC for helping me with this even though now you are on the other side of the world, its great that you kept these things safe.

I am maybe a little bit late, but the links you provide for the photos dont work for me, they just show the profile. Can you send them to me maybe? I'm trying to fix my XT660R's cut outs ...

Quote:

Originally Posted by perrytrademark (Post 235397)

I am maybe a little bit late, but the links you provide for the photos dont work for me, they just show the profile. Can you send them to me maybe? I'm trying to fix my XT660R's cut outs ...

They might not work because the host of those photos has removed the links, we don't host any links posted by the forum users.