 What to do Before Welding? |
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 Nov 30 2004, 02:27 AM
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#1
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Benched Member  Group: Advanced Members Posts: 535 Joined: 16-March 04 From: Northern California Member No.: 273  |
I searched to no avail. Just a quick question. I am a little concerned that welding might do something to the PCM. What do I have to make sure it disconnected or whatever in the car before welding? Anything? Tia
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Nov 30 2004, 02:29 AM
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#2
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Nothing says 'I love you.' like a box of Hydroshoks Group: Moderators Posts: 5,284 Joined: 23-December 03 From: Granbury, TX Member No.: 4 |
I've just disconnected the battery ... sometimes, not even that ...
No issues to date ... |
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Nov 30 2004, 04:00 AM
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#3
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Member Group: Advanced Members Posts: 179 Joined: 28-December 03 From: Texas Member No.: 56 |
Never had a problem either....
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Nov 30 2004, 05:13 AM
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#4
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Rennmeister Group: Advanced Members Posts: 781 Joined: 24-December 03 From: Mehlingen, Germany Member No.: 26 |
ialways follow the rule of having the shortest distance between the ground and the head. with nothing in between .for examlpe ypur hand or electronics.
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Nov 30 2004, 02:51 PM
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#5
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Experienced Member Group: Advanced Members Posts: 1,427 Joined: 12-February 04 From: Huntingtown, MD Member No.: 193 |
I've never had a problem as long as I have a good electrical connection on the welding clamp, but I would pull a lead from the battery and unplug the PCM. I've only welded on older cars to date, but for the literally 4 min it takes to undo a battery lead and undo the PCM it's worth not having a problem. Remember you are sending a lot of volts through the body when MIG welding.
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Nov 30 2004, 03:00 PM
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#6
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Advanced Member Group: Advanced Members Posts: 289 Joined: 30-December 03 From: Verona, VA Member No.: 71 |
You're better off playing it safe. Unhook the battery, and the PCM. I have also neglected to do this in the past, and so far haven't had any problems, but if you leave them hooked up then there is a definite risk. I always try to unhook them, the only reason I didn't was because I simply forgot to.
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Nov 30 2004, 03:44 PM
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#7
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Benched Member Group: Advanced Members Posts: 535 Joined: 16-March 04 From: Northern California Member No.: 273 |
Thanks for the info guys. Its probably best I play it safe and disconnect Batt. and PCM. I don't need any headaches (IMG:http://www.frrax.com/rrforum/style_emoticons/default/banghead.gif) . I thought there might be a possible no-no keeping those things connected. Because of the the electricity that will be grounded the the chassis.
But I fully acknowledge the fact that it has been done before w/o issues everything connected. Thanks again for the help deciding what I should do (IMG:http://www.frrax.com/rrforum/style_emoticons/default/thumbup.gif) Tony |
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Nov 30 2004, 10:52 PM
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#8
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Member Group: Advanced Members Posts: 244 Joined: 27-January 04 Member No.: 158 |
I am a little late adding a reply, but it sounds like you are going to make the right decision. Where I work we run into this on manufacturing equipment on a daily basis. Definetly disconect the battery and the computer. Also as was previously stated put the ground as close to your work as possible. I have seen thousands of dollars in damage from a ground that was poorly located and a 2 minute weld.
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Nov 30 2004, 11:34 PM
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#9
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Benched Member Group: Advanced Members Posts: 535 Joined: 16-March 04 From: Northern California Member No.: 273 |
QUOTE (souseless @ Nov 30 2004, 03:52 PM) I am a little late adding a reply, but it sounds like you are going to make the right decision. Where I work we run into this on manufacturing equipment on a daily basis. Definetly disconect the battery and the computer. Also as was previously stated put the ground as close to your work as possible. I have seen thousands of dollars in damage from a ground that was poorly located and a 2 minute weld. Pffeww,Yeah I did disconnect the batt. and the 4 Pcm wires before leaving it today. Thanks again (IMG:http://www.frrax.com/rrforum/style_emoticons/default/thumbup.gif) |
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