Intermittent loss power.

[beemer pimp]

Hi everyone! It's been while. Anyone still drive R1100?? . Need some help in direction please.
OK long story short, I rebuild r1100rt after crash and its been in use for last 4 years 20k miles dayle without any hassle, but for last 6 months intermittent loss power under load, just for 1 second like blip, then back to normal happens in random and not to often..2-3 times a month . Good or bad weather, bike still warming up ( about 3 miles in to ride) so I replace hall sensor 80k on the clock, but problem still pupes up now and then other wise it's runs good . Any toughts?

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[beemer pimp]

Ht leads? Coil? Fuel pump?

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[tadhgocuilleain]

Did the 1100s have the same problem as the 1150s with the cables breaking near the headstock? It won't take long or cost anything to rule that out.

 

[brut33]

Very similar to the issues with my 1100GS after about 20 minutes running.

http://www.ukgser.com/forums/showth...GS-Engine-cuts-out-whist-doing-a-steady-50mph

As you can see in my first post I didn't notice if my ignition lights were on or off. I can now confirm they stay illuminated.

The bike has lost power since on three occasions under the same circumstances.
I was thinking fuel starvation, but because the bike restarts first flick following a cut out probably not.
Once this has happened the bike runs trouble free for the rest of the day.

Work carried out so far;

Headstock wires checked.
Throttles balanced.
Battery replaced.
Hall sensor replaced.

 

[beemer pimp]

Thanks for reply fogs.
This goin to wreck my head for sum time, it's happens so rare, would be hard to pinpoint.
I check wiring on handlebars and ignition, all looks good. Because bikes cuts out and starts straight away on the roll, I don't think its fuel related.
Only coil comes to my head but then again I never heard coil falure on r1100rt gs. So only option I see it's wait and try catch in the act..

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[MasaTku]

Thanks for reply fogs.
This goin to wreck my head for sum time, it's happens so rare, would be hard to pinpoint.
I check wiring on handlebars and ignition, all looks good. Because bikes cuts out and starts straight away on the roll, I don't think its fuel related.
Only coil comes to my head but then again I never heard coil falure on r1100rt gs. So only option I see it's wait and try catch in the act..

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I am answering this very old thread, in which case I assume that the previous problems have already been overcome.

I had exactly the same problem, which I could not locate from Motronic's fault codes, not by measuring components with a multimeter, and not even by bracketing the fault points with an oscilloscope.

After fault analysis, I always ended up with a TPS sensor, so I finally bought this part, even though it was an expensive purchase.
Before buying, though, I crossed my fingers and prayed for a while ;-)

The new TPS sensor immediately eliminated the problems, and at the same time, thanks to the new sensor, the fuel economy improved by more than 10% compared to the previous one. Now the BMW engine runs like it was new.