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Welding question

Discussion in 'The Garage' started by cbbr, Jan 14, 2005.

  1. cbbr

    cbbr 1 ton status GMOTM Winner

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    I am going to weld in a new section in my exhaust y-pipe to get the front driveshaft off of it. Question is do I need to disconnect the truck's battery before welding the pipe. Using a mig wedler.
     
  2. diesel4me

    diesel4me 1 ton status Premium Member

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    yup!

    I would--I welded hundreds of times on cars and trucks with no problems--then one time I welded some new metal on the tailpan of my van under the rear doors--after I was done,I started it up to move it out of the garage,and I heard a loud squealing noise coming out of my subwoofer box--my 300 watt amplifier went up in a cloud of smoke!--didnt fry the speakers or the radio,but the amp was TOAST!---this was with an arc welder,but the mig is basically the same ,I would definately disconnect the battery--I was glad my van didnt have a computer in it,or that might have been cooked too....:blush: --I've seen others blow headlight and tailight bulbs out while welding too,and I think the HEI module wont like the voltage surges either...:crazy:
     
  3. Zeus33rd

    Zeus33rd Smarter than you GMOTM Winner

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    Get a good ground and it's not necesary. I've never unhooked a battery on any vehicle I've welded on. Welded on quite a few too. Computer and non-computer. Obviously not a big deal if ya wanna disconect it anyways though.:)
     
  4. big jimmy 91

    big jimmy 91 1/2 ton status

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    Personally I will disconect the battery before welding on any vehicle
    For the amount of time it takes , you would really be pissed off replacing electronics ($$$) because of a poor ground situation
    I have not in the past and been lucky , but a few guys did it on their pulp trucks and paid the price (no waranty coverage , comp. rats them out at the dealer)
    Better safe than sorry.

    :thumb:
     
  5. darkshadow

    darkshadow 1 ton status

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    i have welded contless time with no problem but i always have good ground.

    grind the meatle bare and have your clamp on tight no prob.

    but yeah if your worryed putt the ground only takes a min.
     

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