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03-03-2018, 04:07 PM | #46 | |
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03-05-2018, 10:26 AM | #48 |
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"Officer the gas pedal was stuck and then when I saw your flashing lights it all of a sudden released and I was able to slow down" -Me next speeding ticket
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03-05-2018, 10:10 PM | #49 |
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03-07-2018, 09:55 AM | #50 | |
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But as a 40-year Bimmerhead, all I can say is this is what happens to a unique, specialized car manufacturer when it caters to the masses of soccer moms and dads and builds SUVs. A legacy BMW driver (no, not the 1980s era Yuppies) would be absolutely embarrassed because he was such a driving wimp, he couldn't get his BMW to stop. Pitiful. |
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03-08-2018, 09:52 AM | #52 |
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I too think this was all fabricated for some other unknown reason.
However, with the 'Fly-by-wire' systems I would not rule it out 100%. I owned a 2008 E83 automatic that at times would surge forward for no reason (it was never out of control). I would not rule out an odd software glitch where it could stop receiving input from the pedals or any other host of oddities. How often do we need to reboot our computers and phones? Possible? Not likely. Steve |
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03-12-2018, 09:10 AM | #53 | |
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There are two sensors in the pedal, and one operates at double the voltage of the other. So, say you are at 10% throttle, one sensor will see something like 0.83V, the second will be exactly double the first, 1.66V. If those numbers are even 0.05 V off, the computer will trigger a light, ignore throttle input and put the engine at idle. So any combination of a bad sensor, wiring short, short to ground, short to power, short between the two sensors, will shut the system down immediately. |
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03-12-2018, 09:25 AM | #54 |
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^thats totally true.
Both the gaspedal and the throttlebody have 2 potentiometers. If one differs from the other, the engine will go in emergency mode.
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03-13-2018, 01:12 AM | #55 |
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All the ways for this malfunction I can think off require a list of independent things going wrong all at the same time. That being said, with the millions of miles that are racked up collectively on BMWs, one actually showing the perfect storm is not impossible.
But as said above, an independent malfunction of the TPS is not enough. Neither is a VANOS stuck open malfunction (the throttle valve would still choke the engine). I guess a stuck VANOS --AND-- a stuck throttle valve at the same time would keep the air flowing in, but you'd also need to get gas in, which means that the ECU would keep the injectors squirting with gas pedal at 0. That's a lot of things going wrong all at the same time. |
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03-21-2018, 08:19 PM | #56 |
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This guy is full of shit or on drugs. Most likely both.
Was the engine bouncing off the rev limiter for 30 minutes straight? Is that even possible? Remember we're talking about a BMW here!! ;P |
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