Having problems with XTR (2008 15k miles)
A couple of weeks ago I noticed that the headlamp was not on so I replaced bulb and fuse, however the fuse kept blowing so I took it in to local bike mechanic who after checking the bike eventually found that two wires in the loom had rubbed together causing the headlamp circuit to short out.
He fixed the problem (charging 4 hours labour) and said it may only be a temporary fix and I could have further problems
I had previously told him that the bike had occasionally stalled whilst out on run and was difficult to re-start then ran poorly after this.
He advised that the wiring was of poor quality had signs of water ingress and the ecu had a hairline crack and the cost of a permanant repair could be in the region of �1k (new ecu & loom)
I was out today on a short run and when I pulled in the clutch approaching a roundabout and the bike cut-out and was very reluctant to start then ran like a pig stalling every time I pulled in the clutch. After a half a mile or so and a few dangerous moments with impatient motorists I decided the pull over onto the footpath and switch off, After 2 or 3 minutes the bike started up easily and ran perfectly all the way home (about 10 miles)
I would be grateful if anyone who has had a similar problem or anyone who has an ideas could share there thoughts with me--cheers Dandy

I have a feeling your TPS is to blame, Throttle Position Sensor.

In 2006/7 there was an official recall by Yamaha to have them all changed free of charge, it could be your bike might fall under that category, probably being a 2007 build that only got sold in 2008.

To be sure please remove the TPS and read the serial number then send Kev a pm with this number and he will be able to tell you for certain if the TPS is one of the faulty ones in which case you can go back to any official Yamaha dealer and ask them to swap it for a new one.

Many thanks for your swift reply CaptMoto and the suggestion that it maybe the TPS. I will do as you suggest and pm Kev with the serial no -cheers Dandy

the first diagnosis could (and probably is right) the wiring is poor quality, if you take the tank off and inspec the harness plugs you will find lots of furry green terminals, the stalling and poor running was exactly the same with mine before it died one very cold november night, couple of hours with a soldering iron and some heatshrink sorted it though

Just got bike from dealers had to replace the
thermosensor assembly
throttle sensor assy
spark plug
Dealer reckons never had these sort of issues before also neither had Yamaha technicians
labour was 6 hours
pretty pissed off with a �400+ bill for a bike that is less than 5 years old
this is in addition to a �150 bill a few weeks ago for a headlamp wiring fault
I certainly wont be looking in the direction of Yamaha for my next two wheeled friend.
Yes I have got my whingy head on at the moment

Just a reminder to the forum members we have the ASK KEV section for these types of problems, we have been able to fix 99% of problems over the past few years, we have seen many cases like yours, in fact hundred's of TPS's were recalled over the years as well as ECU's.

We have not seen many TPS's problems on the 2009> onwards models, as the 09 model TPS is completely different to the old types.

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Mods that I have done to my XTX's

My 04 XTX
Stage 1 & 2 DNA filters / Kev fuel mod / snorkel mod / Drilled air box mod / Engine breather mod / Fork Spacer mod / 15w fork oil /
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My 07 XTX
Raptor 700 cylinder 102mm / Modified Crank Case to take a 105mm Raptor Cylinder / 11:1 102mm JE Raptor piston / Stage 1 Raptor Hot Cam / Ported head / Colder Spark Plug / +2mm Throttle body / DNA stage 1 & 2 filters / Modified Air Box / Snorkel removed / Worry Brothers stage 2 filter cover / 6mm & 8mm Bolts Replaced with Titanium Bolts / Recovered seat in Black / O2 Eliminator /

My 09 XTX
59HP at the rear wheel / Stage 2 Raptor Hot Cam / DNA stage 3 Air Box / Carbon Can Exhausts / Modified Exhaust Link Pipes / PCIII With Custom Fuel Map / Wideband Commander O2 Data logger / LCD100 Dyno Jet display & fuel adjuster / 2500 OHM HT lead instead of a 10K OHM XT lead / Extra Coolant Cooler / Protaper Fat Bars / Tail Tidy With LED Tail Light / OKE Protection Knobs / LED indicators / AIS blocked / Modified rear sprocket rubbers / Rear Foot Pegs removed / 09 ECU With 02 Sensor Changed To A 06 ECU / Complete wiring harnes Changed from 09 to 04 / Home made LED resistor flasher / Hole drilled in the fuel tank filler neck to allow quicker filling / Modified Bar End Weights / Progressive front fork springs, 15W fork oil, forks lowered 25mm, used XTR rear links lowering the rear 20mm, rear spring one click stiffer / Changed front & rear guards from blue to black / 47T rear sprocket / Speedo Healer V4.0 / Kev throttle cam mod / Throttle grip mod / The new 2010 O2 sensor mod is out, works a treat, The new 2012 O2 Controller is out, PM me for details

Now ride a 2018 MT09SP ABS + TCS

My KTM 990 SMR Mod book. http://www.ktmsmt.com/viewtopic.php?f=13&t=4946