2015 model RT suddenly goes to "limp mode" - Advice needed please!

[Schtum]

2100 metres is quite high in a European context.

It's not really. Some of central Spain is at that altitude and in the US, I can imagine the Merkins being really pissed off if their new RTs ran out of puff every time they went to Lake Tahoe, let alone up to the top of Mt Evans at over twice that altitude.

 

[RedRick Esq.]

I will hazzard a guess at the altitude and or poor fuel. Addin barometric pressure or lack of
Others have said that the altitude is not that high but as no one bike seems to be fueled the same it is possible that yours is very very lean at sea level and gets worse by the foot upwards.

No diagnostic faults showing should indicate nothing serious but it isnt right is it so it must be a variable as opposed to a mechanical fault

 

[Engineer]

Could it be that the high altitude makes the mixture unacceptably weak causing the ECU to go into limp home mode?

I went over the Timmelsjoch on my LC in August and the bike was fine - so not an altitude thing in general so I think that you have another issue.

 

[JohnnyBoxer]

It's not really. Some of central Spain is at that altitude and in the US, I can imagine the Merkins being really pissed off if their new RTs ran out of puff every time they went to Lake Tahoe, let alone up to the top of Mt Evans at over twice that altitude.

Indeed, most of the middle of Spain is 1000m+, before you climb a hill, it surprised me when I rode across Spain that the flat Plains were at such an altitude

 

[stever1]

Altitude should not cause this problem. My 2012 RT has done many of the passes loaded 2 up and luggage with no problems. However, are you using E5/10 fuel ?.

 

[Monty]

Altitude should not cause this problem. My 2012 RT has done many of the passes loaded 2 up and luggage with no problems. However, are you using E5/10 fuel ?.

I treated the bike to Shell V Power 100 on the day it went wrong so not sure what to think really.

Matt

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[Smug]

There is probably a barometric altitude sensor in the ECU which could be giving a false reading. This would not necessarily put up a fault code but could be checked by a dealer in live data with their diagnostics.

 

[Monty]

Dropping in to another dealer in Austria this morning as it is a bit gloomy in the mountains until later. I will see what they say.

Thanks to John, soon to be ex Gasthof Hochalmspitze, for his help in making contact with them in spite of his busy schedule.

Matt

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[roundincircles]

The 1200 WC engine has very sophisticated fuel combustion management and it will adjust to altitude and low octane fuel........but not dirty contaminated fuel.

I travelled for 3 weeks at 15,000 feet using 85 octane fuel, fully loaded with a pillion......engine as sweet as a ...... 1200 WC boxer can be. Went from sea level to 17,000 feet in four hours, again with low octane, no problem.

 

[Ex-Call Centre Chimp]

Did you get this sorted?

 

[Monty]

Did you get this sorted?

The dealer in Villach picked up an error from the throttle positron sensor and recalibrated it and "relearned" the throttle. No issues since in spite of several forays to 2000+ metres so hopefully sorted.

We shall see!

Matt

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[Karlread]

Hope this has fixed it for you and that you enjoy the rest of the trip.

 

[Ex-Call Centre Chimp]

Good news. Fingers crossed.

 

[Monty]

Cheers chaps.

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[Monty]

Tested extensively on the Grossglockner for a couple of hours and other fairly high roads with no further issues. Hopefully a blip that has now been sorted.

Matt

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[Malcvtr]

The dealer in Villach picked up an error from the throttle positron sensor and recalibrated it and "relearned" the throttle. No issues since in spite of several forays to 2000+ metres so hopefully sorted.

Bloody hell! I knew these LCs were advanced, but a throttle positron sensor is real space-age stuff

 

[Monty]

Bloody hell! I knew these LCs were advanced, but a throttle positron sensor is real space-age stuff

It is amazing what autocorrect comes up with!

Matt

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[AberdeenAngus]

I assume the procedure for doing a throttle position sensor reset is the same for an LC as an oil Head?

 

[Monty]

I assume the procedure for doing a throttle position sensor reset is the same for an LC as an oil Head?

I am not sure. They said it was throwing out erroneous values and they needed to calibrate it using their diagnostic thingy and then do the relearning process. I assume the relearning process is the usual wide open throttle repeats.

All seems great since so I am hoping it did the trick.

Matt

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[AberdeenAngus]

Worth giving it a go if it happens again. Good luck anyway.