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General Chat Thread, Jumpstart a car with a 308 in General; However you connect the negative terminal (battery to block etc) ALWAYS make sure you connect the positive terminals first. Given ...
  1. #16

    HarryMonkey's Avatar
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    However you connect the negative terminal (battery to block etc) ALWAYS make sure you connect the positive terminals first. Given the amount of metal around, there is a chance you could catch a connected lead on the metal of the car. If the positives are connected first you are less likely to create a short and cause any damage.

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    yep. Positives first, then negative on donor to chassis/block on the duffer. Guessing maybe less risk of spark and hydrogen bang, given that a running/charging battery can produce it..?

    Mine has been sat under snow since friday..yesterday the battery monitor LED was orange, so I plugged it into my 12v SLA/lead acid bank that the solar panel maintains and left it to sit for an hour or so. This morning..monitor showing flashing green (at least 12.5v) it turned over a little slowly (-6 overnight) but fired up happily. The alternator may be on the way out though..it whined for a good 5 seconds before shutting up and kicking some output in. Ah well, I have a spare.

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    Quote Originally Posted by Sirbendy View Post
    yep. Positives first, then negative on donor to chassis/block on the duffer. Guessing maybe less risk of spark and hydrogen bang, given that a running/charging battery can produce it..?

    Mine has been sat under snow since friday..yesterday the battery monitor LED was orange, so I plugged it into my 12v SLA/lead acid bank that the solar panel maintains and left it to sit for an hour or so. This morning..monitor showing flashing green (at least 12.5v) it turned over a little slowly (-6 overnight) but fired up happily. The alternator may be on the way out though..it whined for a good 5 seconds before shutting up and kicking some output in. Ah well, I have a spare.
    What if the doner car does not have a standard negative terminal to connect to but the dead car does?
    Last edited by Rawns; 22nd January 2013 at 10:46 AM.

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    First i've ever heard of the ECU problem i've never had a issue with any of my cars doing this, seems 99% of the people doing it have just been lucky then.

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    Sirbendy's Avatar
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    Chassis then. Main chassis member or gearbox/engine block. All connect to the negative on the battery.. I usually use the bonnet slam panel, or the under-engine subframe.

  6. #21

    mac_shinobi's Avatar
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    Also check de-ionised water levels on your car battery ?? Presume all if not most car batteries use de-ionised liquid in them ?

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    Re: Jumpstart a car with a 308

    Quote Originally Posted by mac_shinobi View Post
    Also check de-ionised water levels on your car battery ?? Presume all if not most car batteries use de-ionised liquid in them ?
    Lots are sealed now so short of cutting it open your choices are, recharge, recondition, replace.

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    mac_shinobi (22nd January 2013)

  9. #23

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    Quote Originally Posted by dave.81 View Post
    First i've ever heard of the ECU problem i've never had a issue with any of my cars doing this, seems 99% of the people doing it have just been lucky then.

    I think it's a precaution, though never heard of anyone having issues and having been on car forums for 10 years I think it may have cropped up.

    Sometimes it's very difficult to find a good clean bit of metal.

    Rob

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    mac_shinobi (22nd January 2013)

  11. #24

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    The battery must have a negative terminal... Where is it? I've never seen under the bonnet of a 308.

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    mac_shinobi's Avatar
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    Quote Originally Posted by SYNACK View Post
    Lots are sealed now so short of cutting it open your choices are, recharge, recondition, replace.
    That's what you get for buying a french car /Sarcasm

    My battery has the screwable tops for the de-ionised liquid but like you say re-charge / recondition or replace

  13. #26

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    Quote Originally Posted by Andrew_C View Post
    The battery must have a negative terminal... Where is it? I've never seen under the bonnet of a 308.
    Funky battery on the 308 - presume the OP has a similar battery ( image on the below forum link )

    308 Battery Connections - Peugeot Forums

  14. #27
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    This may help? Car Battery fitting guide

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    Quote Originally Posted by mac_shinobi View Post
    Funky battery on the 308 - presume the OP has a similar battery ( image on the below forum link )

    308 Battery Connections - Peugeot Forums
    That's it! Spot on. Should have thought to take a pic when I was under there last night.

    The large rectangular plastic section in the lower left hand corner of the pic is where the main positive terminal is.

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    mac_shinobi (22nd January 2013)

  17. #29

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    Quote Originally Posted by reggiep View Post
    Except they don't list a Puegeot 308! And the Peugeot forums show a variety of + terminals, but where is the neg? Is it under that flap on the left?

    I have owned French cars, and know how weird they can be, but "Ye cannae change the laws of physics"; there MUST be one somewhere!
    Last edited by Andrew_C; 22nd January 2013 at 12:57 PM.

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    Quote Originally Posted by Andrew_C View Post
    Except they don't list a Puegeot 308! And the Peugeot forums show a variety of + terminals, but where is the neg?

    I have owned French cars, and know how wierd they can be, but "Ye cannae change the laws of physics"; there MUST be one somewhere!
    Nope, that's a plus terminal as well.

    Now you see my problem. I have scoured the battery under the bonnet and there is not a single trase of a negative terminal that I can see! I even had a read of my manual and it's not clear there either.
    Last edited by Rawns; 22nd January 2013 at 12:59 PM.

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