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Thruxton r idle issues

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#21 ·
question

Hi all,

just received my new Thruxton and I have this problem as well (exactly as depicxted on this thread).
i have a few questions though:

- do you think that the whole power curve is affected because I have the vague feeling that it is not as powerful as it should be?

- when accelerating (being in 3rd at 2500-3000 rpm), I hear a not so cool noise that comes in addition to the roaring twin, (difficult to describe), has anyone noticed something like that? can this be related to the same problem?

-what can I tell my dealer in order to make sure he will be able to fix the problem? has the issue been clearly identified? He's surprised i'm the only of his customers who mentioned this.

thanks for your answers, it's good to be back on the forum!
 
#22 ·
We have seen this in our neck of the woods. We adjust the steppers at the 500 mile service and it goes away. I just read a previous thread about doing your own 500 mile service. While many things can be done by the owner, steppers can not "unless you own a Triumph store." Please have the steppers done and a GREEN SHEET printed up. All the new Street Twin, T120's, and new Thruxtons get progressively worse unless this is done. Paying someone to just turn the wrench off should be a red flag. I turn that down at my shop. Honesty before profit. I hope it pays off.
 
#26 ·
So, just had the first service done. I provided them with all the info that I could find here. They uploaded the new curve. Initially the computer said the throttle handle was not adapted (no green). They changed the throttle sensor and it sorted it out. They said the bike was ok. Indeed, it runs much smoother in the low rev but it didn't solve the engine cutting off issue. Don't really know what to think about it. It's not only a comfort issue but also a safety issue, I don't want to find myself in an emergency braking with a dead engine, loosing the abs and all. Don't really know what to do now. I'm not going to go back to the shop every week until the find out. Anyone has an advice?


Sent from my iPad using Tapatalk
 
#27 ·
Had my 500 mile service done yesterday. I don't think they updated the tune, but I probably had the latest when I picked up the bike 3 weeks ago. I didn't really have any idle issues. The bike did have a bit of a 'sputter' while rev'ing that I attributed to the 270 firing order (this being my first big twin). They did say the throttle bodies were pretty far out of sync. The bike does seem to rev much smoother now, and just in the 150mi or so that I put on the bike since picking it up yesterday, I think my MPG is up a bit (will need to confirm after my next fill-up).
 
#28 ·
DaveTT said:
We have seen this in our neck of the woods. We adjust the steppers at the 500 mile service and it goes away. I just read a previous thread about doing your own 500 mile service. While many things can be done by the owner, steppers can not "unless you own a Triumph store." Please have the steppers done and a GREEN SHEET printed up. All the new Street Twin, T120's, and new Thruxtons get progressively worse unless this is done. Paying someone to just turn the wrench off should be a red flag. I turn that down at my shop. Honesty before profit. I hope it pays off.
Click to expand...


Dave, when you say you adjust the steppers, is it a physical intervention on the bike,or is it just done by plugging it on the computer. The mechanic said all is done via the computer


Sent from my iPad using Tapatalk
 
#29 ·
My Thruxton R has been stalling on the down shifting since day one, I took it for the first service and got the green sheet, they reflashed the ecu etc. it was ok for awhile but won't start on first push now, I now have 5000kms on it and it's started the stalling again. Dealer says no updates yet. Triumph needs to get this problem sorted before someone gets hurt...
 
#30 · (Edited)
Vertigo076 said:
Dave, when you say you adjust the steppers, is it a physical intervention on the bike,or is it just done by plugging it on the computer. The mechanic said all is done via the computer
Click to expand...
AFAIK all EFI engines have two idle speed settings: One is what's called its "natural" idle and the other is the "pre-determined" or "programmed" idle.

The former is the idling speed obtained by the small amount of air that is let past the butterfly valve in the throttle bodies. This is preset by a mechanical throttle stop which sets the minimum butterfly valve opening, probably one of the two "hard stops" shown on the image below. It is then sealed and never touched again.

The second is the idle setting that the manufacturers program as desirable and correct into the control computer. They should be about the same, the problem is maintaining it that way in the face of changing engine operating conditions and loads. The idle is maintained on normal engines by a stepper motor called the IACV (idle air control valve) but on ride-by-wire systems things are a lot more complex and a more sophisticated motor is used (Triumph call it an actuator), this has a much harder task to accomplish, not just idle speed, but warm-up speed and then the full throttle range.

There must be a way to adjust the "hard stops" to fix the base idle.


Image
 
#31 ·
HI everyone,

I'm fairly new to this model Thruxton R and of course I have encountered the clicking issue few time while opening the throttle. I will take my bike the first 500 mile check soon but dont really know what to describe the issue. Hope they can fix it in Thailand or beware of the issue.

Now, I'm starting to modify my bike. Thinking of put of aftermarket Air filter like the previous model (BC air filter), the conical one and get a hand made full titanium exhaust with power-commander to adjust the map and ECU


And I would put a set of forge wheel from DYmag.


What do you guys think of this of approach?
Is there any concerns for doing this on a very new Thruxton R?
 
#32 ·
ThruxtonTee said:
HI everyone,

I'm fairly new to this model Thruxton R and of course I have encountered the clicking issue few time while opening the throttle. I will take my bike the first 500 mile check soon but dont really know what to describe the issue. Hope they can fix it in Thailand or beware of the issue.
Click to expand...
The dealers have access to a new map that takes care of the issue you talk about - when you take your bike in for that 1st service, make sure to ask for a print-out so you can see there was an updated map applied.

I'll let those with direct experiece answer your other questions - welcome to the Club Cafe !
 
#33 ·
ThruxtonTee said:
HI everyone,

I'm fairly new to this model Thruxton R and of course I have encountered the clicking issue few time while opening the throttle. I will take my bike the first 500 mile check soon but dont really know what to describe the issue. Hope they can fix it in Thailand or beware of the issue.

Now, I'm starting to modify my bike. Thinking of put of aftermarket Air filter like the previous model (BC air filter), the conical one and get a hand made full titanium exhaust with power-commander to adjust the map and ECU


And I would put a set of forge wheel from DYmag.


What do you guys think of this of approach?
Is there any concerns for doing this on a very new Thruxton R?
Click to expand...

The new map will solve clicking and stalling, also makes down low much smother, and top end more useable.

Cheers
 
#38 ·
My Thruxton R is pretty new - it was delivered mid-September. It had it's 500 mile service on 14th October and has now done 800 miles. I hadn't experienced this problem until this morning, when it clicked and cut out under deceleration. Since it's just been serviced, it will have the latest map, and has otherwise been running great. It did stall once or twice when it was brand new, but I put that down to either me being a bit ham-fisted on an unfamiliar bike, or the engine being a bit tight before running it. But it hasn't done that recently and this is the first time that I've heard a click and had the engine cut.

So whatever the problem is, it's still present on new bikes and with the latest map.
 
#40 ·
Hummm... this happened to me during the test ride... I thought it was just a mistake on my part... same as most folks, come to an intersection, drop speed to a stop, bike dies. Took a few seconds to restart and be on my way. Only did it once during the ride.
 
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