Toyota Throttle Electronics Easily Confused
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From: Vic Smith on 27 Feb 2010 20:34 On Sat, 27 Feb 2010 17:59:49 -0700, Ashton Crusher <demi(a)moore.net> wrote: > >My memory is fuzzy, it's been a while since the Audi 5000 UA issue, >but as I recall it was the first generation of Audi with an idle air >bypass valve, or some such, and as such it allowed the computer to >control, to a limited extend, the "throttle". The Audi's mainly did >their UA at low speeds/stops which always made me think it was tied >into the idle bypass. Other then sticking pedals on mechanical >linkage, and usually after someone has monkeyed with it, I've never >heard of UA on a true manually controlled throttle, other then simply >stepping on the wrong pedal which no doubt does sometimes happen. As I recall they pinned it on the pedal config and changed that. I didn't follow it closely, though I think the mess was initiated here in Chicago when a woman came roaring out of a parking garage and ran over some people. Never cared about getting an Audi anyway. And I probably will never own a Toyota, but this is much bigger news so it's hard to not know something about it. Beside that, it's got me looking into what they're doing with this drive by wire stuff, which isn't Toyota specific. And I notice the EPS problems aren't limited to Toyota, and there are a lot of Cobalt complaints. My wife wanted a Cobalt as her next car, and now maybe I can talk her into something else without electronic control into throttle and steering. If such a beast will even exist when I'm ready. --Vic
From: Ashton Crusher on 27 Feb 2010 21:00 On Sat, 27 Feb 2010 19:34:01 -0600, Vic Smith <thismailautodeleted(a)comcast.net> wrote: >On Sat, 27 Feb 2010 17:59:49 -0700, Ashton Crusher <demi(a)moore.net> >wrote: > > >> >>My memory is fuzzy, it's been a while since the Audi 5000 UA issue, >>but as I recall it was the first generation of Audi with an idle air >>bypass valve, or some such, and as such it allowed the computer to >>control, to a limited extend, the "throttle". The Audi's mainly did >>their UA at low speeds/stops which always made me think it was tied >>into the idle bypass. Other then sticking pedals on mechanical >>linkage, and usually after someone has monkeyed with it, I've never >>heard of UA on a true manually controlled throttle, other then simply >>stepping on the wrong pedal which no doubt does sometimes happen. > >As I recall they pinned it on the pedal config and changed that. >I didn't follow it closely, though I think the mess was initiated here >in Chicago when a woman came roaring out of a parking garage and ran >over some people. >Never cared about getting an Audi anyway. >And I probably will never own a Toyota, but this is much bigger news >so it's hard to not know something about it. >Beside that, it's got me looking into what they're doing with this >drive by wire stuff, which isn't Toyota specific. >And I notice the EPS problems aren't limited to Toyota, and there are >a lot of Cobalt complaints. My wife wanted a Cobalt as her next car, >and now maybe I can talk her into something else without electronic >control into throttle and steering. >If such a beast will even exist when I'm ready. > >--Vic ultimately I think we will all be in electric cars, even performance cars. So most likely everything will be electrically driven.
From: Hachiroku ハチロク on 27 Feb 2010 21:04 On Sat, 27 Feb 2010 17:59:49 -0700, Ashton Crusher wrote: > Other then sticking pedals on mechanical linkage, and usually after > someone has monkeyed with it, I've never heard of UA on a true manually > controlled throttle, Oh, WeLLLLLLL, I do declare, /I/ have! If I remember correctly, I believe it can, and has been attributed to rusted throttle cables. And, would you believe, it happens a bit here in the Northeast. And your logic is fuzzy as well.
From: Clive on 28 Feb 2010 07:15 In message <b5hjo59g9hs69ckb05titb7f4ivrjnac5v(a)4ax.com>, Vic Smith <thismailautodeleted(a)comcast.net> writes > My wife wanted a Cobalt as her next car, >and now maybe I can talk her into something else without electronic >control into throttle and steering. I wouldn't have thought that any new car with cable control would pass emissions regulations. -- Clive
From: hls on 1 Mar 2010 11:40
Some tests have been run which indicate that even expensive aircraft may respond to radio frequency emissions such as cell phones. http://abcnews.go.com/Technology/BusinessTravel/story?id=1680690&page=1 A less sophisticated test showed that there were indeed instances of interference, but they were very difficult to duplicate. Intermittent situations like this are very hard to locate and cure. It would not be impossible to consider that cell phones, radar emissions, 2-way police radio, lightning strikes, and other forms of RFI could, under some complex set of conditions, cause problems in cars. The AUDI situation, it seems, has not been totally solved yet. It was linked to six deaths. http://answers.edmunds.com/question-Audi-runaway-acceleration-problem-88151.aspx http://en.wikipedia.org/wiki/Audi And last, the Ford Firestone rollovers were linked to several hundred deaths. One has to be careful with statistics, and sources of the same. I am sure you can all find information that conflicts with, and supports, just about anything anyone can say. http://www.pbs.org/wgbh/pages/frontline/shows/rollover/etc/before.html |