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Thread: Fuel shutoff

  1. #21
    FLAC TheLlama's Avatar
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    Quote Originally Posted by konnichiwa
    I would not have an operating system behind ANY aspect of critical car control, steering, pumps, lights, breaks, heck, even windscreen wipers!!

    Microcontrollers are the way If they work the first time, they'll work every time. (okay okay, mostly!!)
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  2. #22
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    Ok, well you guys may be paranoid or just not getting it, but I'll let you know the first time it fails. I wouldn't hold my breath though, it will be a while if ever.

  3. #23
    FLAC SnyperBob's Avatar
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    Quote Originally Posted by dmcdlrn
    Ok, well you guys may be paranoid or just not getting it,
    May be too paranoid? Are you kidding me????!!!? People have already pointed out the safety issues associated with any problems that you may incur.

    Quote Originally Posted by dmcdlrn
    Well first off.. power brakes and power steering are minimal... I have drivin several cars in my life without steering, and brakes I have had completely fail on me before at an intersection and I still stopped... I have a light weight manual with a good ebrake. In order to get this to fail the computer would have to somehow throw a pulse with the application shut down and the card uninitialized to the proper output. Thats about as likely as your cd tray ejecting on its own... the computer would have to inadvertently send a pulse to the release latch.
    What about a power spike, a bad ground, or some other unforseen power issue that could cause issues. Let alone issues that car vibrations cause...

    Quote Originally Posted by dmcdlrn
    To this point I'm not super convinced with well there is the remote chance that it could somehow shut the fuel off while your driving it... and thats unsafe... common guys... we all have touch screens in our dash... really, is that safe?!
    You're comparing having a screen in the dash to cutting the engine on a moving vehicle? Sorry bro, but you are either to naive to see the consequences of an issue, or not very knowledgable about cars.

    You are basing this off of hibernation if I understand correctly. Have you had any other issues with hibernation in the past? Based on the majority of the threads around here, hibernation is not the way to go...

    What if your carputer takes a dump or won't start up - you can't drive your car? You already said you don't want to go the way of the mechanical switch, but I'll bet that's the backup method for getting your car to run.

    OK, here's the deal.....we'll see how quick you can initiate your backup sequence after your car dies in the middle of an intersection, while turning across traffic....while I'm traveling 55 mph in my Ford Excursion. I'll slow down a little, so you should have about 2 seconds to react.

    Maybe you can realize how funny this statement was - made my week!

    Worst case the thing would screw up and shut off the fuel pump while driving. The car would coast to a stop and the bypass would be initiated and I would be on my way again.
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  4. #24
    FLAC SnyperBob's Avatar
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    Here's a visual of me coming...
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  5. #25
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    Quote Originally Posted by dmcdlrn
    I don't even want to lock my doors thats why I have an alarm.
    Every aftermarket alarm I've seen, made past like 1980 has an ignition cutoff built into them. This should work even with manual transmissions...

    Automatic start on the other hand usually isn't available. I'm guessing you either have a stock alarm from the factory, or just keyless entry. The smarter and safer route would be to upgrade your alarm, and scrap the 'Transporter' idea.

    EDIT: Yes I know I'm coming across as a dick, but I just can't sit back when safety is an issue like this.
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  6. #26
    FLAC TheLlama's Avatar
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    And don't forget, Toilet-Man, you are not the only one on the road. I bet that most drivers are as concerned as the users on this forum who are shunning your fuel-shut off idea. It would be very irresponsible of you to install such a device into your car without testing it on a closed course for several months worth of driving. (you can do this testing in two to three weeks of heavy driving, on a closed course, with different enviromental conditions, while asserting various planned test cases). I do not know much about you, but I assume you are a hobbiest; not an EE or a mechanic.

    Let me put it this way - I am glad as hell I do not live in Maine so I do not have to risk hitting you when you are turning left across traffic and your engine goes out. Remember, this includes your alternator, power steering, and power brakes. Considering your stance, you would not be expecting this since: "it will be a while, if ever."

  7. #27
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    well, sorry to have affended you all by my avatar... I find it slightly less distastefull as the tna shaking avatars only a few posts above.

    good news for you is I'm moving to nashville.. just happens to suck for you now. I'll keep an eye out for you so that I can attempt to get it to fail around you.

    and to answer your question... I have an engineering degree as well as an associates in computer system information. I build off road go karts for a living.

  8. #28
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    Quote Originally Posted by dmcdlrn
    well, sorry to have affended you all by my avatar... I find it slightly less distastefull as the tna shaking avatars only a few posts above.
    Your avatar isn't distasteful at all... I just thought Toilet-man sounded cool. The avatar would be even cooler if it had eyes right under the tank lid. All the bouncing boobs avatars are distasteful IMHO.

    Quote Originally Posted by dmcdlrn
    good news for you is I'm moving to nashville.. just happens to suck for you now. I'll keep an eye out for you so that I can attempt to get it to fail around you.
    , I'm serious though, it still sounds risky.

    Quote Originally Posted by dmcdlrn
    and to answer your question... I have an engineering degree as well as an associates in computer system information. I build off road go karts for a living.
    Then perhaps you actually do have what it takes to properly implement this solution. I would never recommend this as an exercise for a novice. I still feel uneasy having anything "mission critical" running on a desktop OS on non-industrial/embedded hardware, especially when the OS is WinXP.

  9. #29
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    well, long and short of it... I don't think I'll do it. The last couple of posts were just cause I enjoy an argument

    In any event... I hear what your all saying and your right. I don't think that its very likely for it to fail because again its built to function upon failure... most people would have a fit about the remote start I have on my car... its a standard... but it has a neutral safty system... which is in my opinion slightly more risky then having a fuel shutoff...

    Oh, the avatar is cause I was having a really crappy day and needed a new one... cause the new car I bought ended up being a big problem... and I fought the dealer.... blah blah blah... needless to say I still have my sunfire. ( I may work on those eyes for you )

    And... I actually am not likely moving to nashville... I was going to, but things have changed and I thought it would be funny to say it and it so happens that you live in TN.

    Oh, and by the way.. I have a viper 2 way responder alarm snyperbob... it has motion, piezo, impact, tilt and opening triggers (doors, hood, trunk). It has starter bypass. I also broke one of my remotes one day and was stranded. I single handedly disarmed and disabled the starter bypass in about 5 minutes with a leatherman and alittle tactical know how without the alarm even so much as sounding the warning trigger. Granted I installed it so I knew alot about it, but there are others that could probably pull that off without people noticing.

    But! I think now is a good time to put this to rest.

  10. #30
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    Quote Originally Posted by dmcdlrn
    The last couple of posts were just cause I enjoy an argument
    I realised that, you already made up your mind you gonna install it so why bother to even ask for advice. Its like stop me please stop me before it all goes wrong.


    I just cant be arsed to post the above earlier on

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