Birty Dastards Jeep Club

Tech Forum => Workshop => Topic started by: puggy on April 09, 2008, 10:25:10 PM

Title: Arc welding on XJ
Post by: puggy on April 09, 2008, 10:25:10 PM

Hello folks, if I wanted to do a little arc welding on my 97 XJ what parts of the electrical system do I need to disconnect.
On earlier cars simply disconnecting the battery was enough but I would hate to fry something important.
Cheers Puggy

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Post by: Mike Pavelin on April 10, 2008, 07:13:37 AM

I would disconnect the powertrain control module and the battery.

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Post by: MuckShifter on April 10, 2008, 06:21:12 PM

Pull the plug out of the alternator too

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Post by: greggmo on April 10, 2008, 11:25:22 PM

remove the earth from the battery. all you need to do is brake the circuit. trust me i am a welder 8-)

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Post by: demonicwillow on April 10, 2008, 11:59:25 PM

Quote from: "greggmo"

remove the earth from the battery. all you need to do is brake the circuit. trust me i am a welder 8-)

I agree, i am a welder by trade too! (jack of all trades here) :wink:

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Post by: greggmo on April 11, 2008, 12:12:18 AM

mig on boddy for sure but ARC is ok on thick stuff

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Post by: puggy on April 11, 2008, 12:30:35 AM

Cheers for the advice, the welding I was planning is on the trackbar bracket at the axle end so is fairly heavy duty.
Excuse my ignorance but what is the Powertrain control module and where is it.