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Using welder to jumpstart car, will try.

Discussion in 'Electronic Basics' started by Tibur Waltson, Dec 25, 2003.

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  1. Could I jump-start my Ford Escort with a 16VDC welder? Actually, the welder
    is 32VAC, 100-amp, but if I hook up some diodes, maybe? Or maybe it's not a
    good idea? But just hypothetically, would it work? I wake in the morning
    with a dead battery and late for work. It's impossible to wait five hours
    even on a strong charger. And I can strip the welder for parts. I might
    consider getting a 100-amp charger/starter but maybe next paycheck? .Will it
  2. Thinker

    Thinker Guest

    Not recommended. ECU modules are quite fussy about the voltage they receive
    and they are expensive!
  3. If your intention is to utterly fry your electrical system
    (including your engine control computer), then yes, it will work
    admirably well. Be standing by with a fire extinguisher, though, if you
    want to salvage what will be left of your car.

    If you have to jump-start, then use the proper equipment and
    procedures. Welders are for welding, period.

    Dr. Anton Squeegee, Director, Dutch Surrealist Plumbing Institute
    (Known to some as Bruce Lane, KC7GR)
    kyrrin a/t bluefeathertech d-o=t c&o&m
    Motorola Radio Programming & Service Available -
    "Quando Omni Flunkus Moritati" (Red Green)
  4. Ross Mac

    Ross Mac Guest

    A new battery will be a lot cheaper than a new car!!
    I think I smell smoke!
  5. Don Bruder

    Don Bruder Guest

    Dunno about smoke, but I'm pretty sure I'm catching a whiff of troll...
  6. Each time a car battery goes dead it loses about half of its capacity...
    So if its been dead several times a recharge won't help becasue it won't
    hold the charge becasue its lost capacity..
    Buy a new battery, Auto Zone will sell returns for about 1/2 price and
    they're good!
    Because they carry a guarantee..
    good luck
    hank wd5jfr
  7. "Don Bruder"
    Well, yeah, ..but I have three cars that says "DO NOT SUPPLY MORE THAN 18V,
    Or your electronics will be DAMAGED." stuck to the hood. That means 16V is
    still 2 volts less than the danger zone. Well, anyway considering what most
    of you said, I ought to go and get a real equipment designed for it since car
    computers aren't cheep.
  8. Ross Mac

    Ross Mac Guest


    No flame here, Don!.....That is unless that Escort gets 20 volts or so!
  9. JeffM

    JeffM Guest

    Could I jump-start my Ford Escort with a 16VDC welder?
    I don't know about Escorts, but one thing I liked about Fords in the past
    was the way they mounted the starter solenoid up on the fender well.

    In theory, if you disconnected the large-gauge wire which goes to the starter,
    you could connect the external source to that wire.
    If the battery had enough oomph to pull in the solenoid and run the ignition,
    you could start the car without any risk of excessive voltage
    running through the rest of the electrical system.
  10. Ross Mac

    Ross Mac Guest

    That solenoid up top, like they used to do it some years ago, sure made them
    easy to hotwire too!
  11. "JeffM"
    Wow, okay, I'll try using some alternator diodes if that's alright. Let's
    see what happens. Thanks.
  12. JeffM

    JeffM Guest

    ...if you disconnected the large-gauge wire which goes to the starter
    Alternators are rated < 42 amps.
    Starters can pull > 100 amps.
  13. Continuously, and many automotive alternators are well above
    this. 60A+ isn't unusual and 100A isn't unheard of.
    Intermittently. 60A diodes shouldn't spontaneously combust after
    a few seconds of 100% overload.
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