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Thread: Carputer stalls when accelerate the car

  1. #11
    Variable Bitrate wallaceacura's Avatar
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    Quote Originally Posted by kbyrd
    C'mon now, really? What do normal street cars pull when accelerating? It can't be more than 1G, probably something like 0.5G to 0.75G max. If this is his problem, he can generate more force by braking.
    Even a Porsche 911 has a tough time getting 1g on the skidpad. And that's under optimal conditions


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  2. #12
    Maximum Bitrate kbyrd's Avatar
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    Quote Originally Posted by wallaceacura
    Even a Porsche 911 has a tough time getting 1g on the skidpad. And that's under optimal conditions
    Actually I just re-read what I wrote and it makes no sense that brake would generate more force. The tires are the limiting factor, not the engine versus the brakes stopping power.
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  3. #13
    Self proclaimed spoon feeder TruckinMP3's Avatar
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    Quote Originally Posted by kbyrd
    Actually I just re-read what I wrote and it makes no sense that brake would generate more force. The tires are the limiting factor, not the engine versus the brakes stopping power.

    True but if Drives do not skip during a car crash why would aggressive driving at a start/stop matter.

    They work right through the car crash... I have done it.

    The issue will be a loose connection or power related.
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  4. #14
    Constant Bitrate Gibson99's Avatar
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    it's true though, that almost every vehicle on the planet can stop MUCH faster than it can accelerate, so braking G force will be much more than acceleration G force, and is usually applied MUCH more abruptly. top fuel dragsters excluded.

    a porsche having a hard time hitting over a G on the skidpad? well, first off, to get up to and maintain that 1g you can't be abrupt about anything. abrupt G forces is what causes hardware failure, not smoothly applied ones. and if my miata can hit a lateral G on street tires, then a porsche should be getting at least 1.25 lateral Gs. unless it's like a 1958 porsche... heh

    back on topic, i think he's definitely looking at a loose connection somewhere. and yes, it's entirely possible for low-grade power transients to cause a machine to stutter but recover once the transient is gone. i used to see it surprisingly often at a former job. once we installed UPSs with power filters, the stuttering went away completely. all depends on the machine itself. some hardware can tolerate it better than others.
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  5. #15
    Variable Bitrate 12Vsystems's Avatar
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    I don't think it's the G force that causes the problem.

    I am having the same issue on my motorcycle computer. When ever I hit the gas the MII 1000 sometimes reboots or the music just skips a bit.

    I hooked up a volt meter and found that when I hit the gas my battery is getting 13.1 volts but for some reason every once and a while the volt meter drops down to 0 volts. Which is what I think causes the skipping/reboots.

    Could this be a bad engine ground?

  6. #16
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    The cars increased engine speed might be causeing some emi. My buddy has a problem that whel his car accelerates his alternators or something puts out interference and he had a portable cd player in his car that would stutter or restart the track. Just a tought, i dont know where exactly your computer is in your car but that could be a contributing factor.

  7. #17
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    why don't you just put it in neutral, rev the engine.... no acceleration, and you get the spikes in voltage

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