Limp Mode

PGlaves said:

I wonder if what people are describing in this thread is truly limp-home-mode or a malfunction in the fly-by-wire throttle control. Somehow if wiggling wires changes things it screams malfunction of the throttle and not an engine management feature.

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There is an electrical connector between the throttle position sensor and the wiring harness. If the harness ever got yanked, that could have compromised the sealing of the connector which in turn permitted the formation of corrosion and a bad electrical connection. In the aircraft universe, the company that designed and made the part that failed has to do a failure analysis and determine if the design needs to be changed. When it comes to vehicles, it takes major injuries, or bodies, to prompt a root cause analysis to be done.

b_rubenstein said:

When it comes to vehicles, it takes major injuries, or bodies, to prompt a root cause analysis to be done.

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Recalling the GM ignition switch debacle.........The result of the root cause analysis might be subject to a cost-benefit analysis......

36654 said:

Recalling the GM ignition switch debacle.........The result of the root cause analysis might be subject to a cost-benefit analysis......

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Every time I read about a cost benefit analysis related to fixing a defect I am reminded of Ford Motor Company and its conclusion regarding Pinto fuel tanks. You see, they were prone to catching fire and exploding when the car was rear-ended in an accident. Ford, with all of the ethical prowess it could muster, did a cost benefit analysis that disclosed that it would be cheaper to pay off lawsuits for deaths and injuries from gas tank explosions than to shield the tank and fix the fatal flaw. Nobody went to jail, unlike if, like VW and Audi, you cheat on fuel mileage tests. Corporate ethics at its finest.

https://www.popularmechanics.com/ca...e-engineering-failures-ford-pinto-fuel-tanks/

PGlaves said:

Every time I read about a cost benefit analysis related to fixing a defect I am reminded of Ford Motor Company and its conclusion regarding Pinto fuel tanks. You see, they were prone to catching fire and exploding when the car was rear-ended in an accident. Ford, with all of the ethical prowess it could muster, did a cost benefit analysis that disclosed that it would be cheaper to pay off lawsuits for deaths and injuries from gas tank explosions than to shield the tank and fix the fatal flaw. Nobody went to jail, unlike if, like VW and Audi, you cheat on fuel mileage tests. Corporate ethics at its finest.

https://www.popularmechanics.com/ca...e-engineering-failures-ford-pinto-fuel-tanks/

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Back when we were GREAT............Vega or Pinto? Warped engine / head which guzzled oil or a fiery death......your choice. It's no wonder a 40-hp, no-heater Beetle seemed like a fantastic alternative.

36654 said:

Recalling the GM ignition switch debacle...

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I was a certified Configuration Management specialist for the prime contractor that builds a plane for the US Navy. I was responsible for having supplier Class II changes for concurrence of change classification (the proposed changes were in fact Class II and not Class I changes). GM was fined over 900 million dollars by the government, because they redesigned the ignition switch, but did not give it a new part number. This made it impossible to determine which cars were built with the old switch and which had the new switch. (Parts that get redesigned and are functionally different, are required to be identified with a new part number.)

36654 said:

How many of you have experienced "limp Mode" when traveling at speed?

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Mine was loose connection on the throttle position cable after a good cleaning.

1000 miles down............

It's been a bit more than 1000-miles since the ECU software upgrade and no Limp Mode. Fingers crossed.

36654 said:

It's been a bit more than 1000-miles since the ECU software upgrade and no Limp Mode. Fingers crossed.

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I too am malfunction free. Keeping my fingers and toes crossed for all of us.

2014 RT is going into limp mode HELP

When the check engine light goes on, the bike goes into limp mode. Two BMW shops have looked into the problem. Nothing specifically has been found. When the second shop worked on it, they thought it was a pinched wire. After 1400 miles the problem occurred again. Sometime turning it off and restarting, it runs normal for a while. I have noticed it seems to happen more often when slowing down. My previous 2005 RT had 240,000 miles and was running very good when I sold it. It is still running. Otherwise the 2014 bike runs very good and pulls strong with no problems. I am not ready to give up on this bike, so please help to get this solved.
Thanks, Ron 24755

Ron,
Based on my experience and some of the posts here, it’s very likely your flapper valve is sticking on your exhaust. Try pulling your silencer off and cleaning and lubing that mechanism, see if that helps.