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Offline Boomer

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MIG welding
« on: July 05, 2006, 15:40:10 »
A bit of advice please.
I have to do some minor welding on my 300Tdi and was concerned as to what I need to disconnect to stop the "sparklies" frying my car's electrics. I know the alternator must be unplugged but what else? Battery? Alarm?

Many thanks
Boomer  :?
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Offline rollazuki

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« Reply #1 on: July 05, 2006, 17:11:00 »
I usually disconnect the battery(both terminals) and Ive never had any probs.
Mebbe safest to remove ecu (not a big job to play safe eh!)
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Offline Boomer

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MIG welding
« Reply #2 on: July 05, 2006, 18:59:02 »
No such fancy 'lectrics on this one, injection is all mechanical.
My main concern was frying the alarm system, but if I disconnect the battery I think it should be OK.

Is your Suzuki only half a horse power !

Thanks for your reply
Boomer
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1997 Disco 300Tdi - 200k and still going strong!
Ducati 750SS
If it don't smell of gunpowder or Castrol R it ain't worth doin'!

Offline beast5680

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MIG welding
« Reply #3 on: July 05, 2006, 21:55:48 »
disconnect the battery and get the earth clamp as close to where your welding as possible and you shouldn,t have any problems
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Neal

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Offline hobbit

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« Reply #4 on: July 06, 2006, 09:41:27 »
I must admit I never disconnect the battery when mig welding, just clamp near the weld area as already mentioned, had no probs with electric/electronics
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Kev

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Offline Range Rover Blues

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MIG welding
« Reply #5 on: July 06, 2006, 13:18:22 »
It can depend on the quality of your welder too.  I've heard of batteries exploding whilst the car was being welded.  It's partly due to the return current through the chassis which can cause a voltage drop accross the ground plane, partly due to the AC nature of rectified DC used in welders.
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Offline mark.yellow.series.3

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MIG welding
« Reply #6 on: July 10, 2006, 23:32:10 »
i weld on a lot of, engine/electronically controlled equipment, on odd occations i havnt disconnected tyhe battery, and all well. but i wouldnt recomend it at all.
disconnect the battery and you should be fine.
but i while back i bought a welding surge suppressor that just clips to the battery and bobs your uncle.
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