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Old 07-14-2008, 04:03 PM   #1
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Precotion before Welding on a Boxster

Do I need to do other precotion than unpluging the battery?

I blown up a part of the electric system on my Kawasaki Ninja many years ago because i din't unplug the battery before weldering, is there other precotion to have on a porsche? thanks

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Old 07-14-2008, 05:01 PM   #2
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I've heard you should disconnect the ECU but I never have but I do use a surge protector that clamps onto the battery. I purchased it from Mac Tools and it's designed to protect the electronics from arc/wire feed welders.
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Old 07-14-2008, 08:16 PM   #3
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From the 986 Factory Manual:

Electronic control modules


Protection against overvoltage

To protect electronic control units from overvoltage during electric
arc welding, the following work regulations must be observed:

When welding work is extensive, the electronic control units
must be removed. Ensure that there are no electrically insulated
parts between the earth connection and the welding point.

Remove clamp from negative terminal of battery and cover negative
terminal of battery.

Connect the earth connection of the electric arc welding equipment
as near as possible to the welding point on the part to be

Do not touch electronic control units or electric cables with the
earth connection or the welding electrode

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