computers and such
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Postmaster
Joined: Sep 2007
Posts: 4,005
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From: Mcafee, NJ
computers and such
i need to know the location of all the computers in my truck that would be harmed by welding on it. most gassers have the pcm and everything runs off that so i just unhook that. not sure if it is the same.
list of ones i might need to unhook
pcm idm
how about gem?
list of ones i might need to unhook
pcm idm
how about gem?
Post Fiend
Joined: Mar 2007
Posts: 26,966
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From: Texas
General rule of thumb is to keep the ground clamp as close to the stinger as possible. I'd also disconnect the batteries, and in addition to the PCM, I'd pull the fuse block and unplug all the connectors from the back of the fuses. Or maybe just pull all the fuses and relays.
Senior User
Joined: Aug 2007
Posts: 412
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From: Fresno, CA
I've welded on hundreds of cars, never did anything more than unhook the batteries. Now we just hook a little surge protector deal to the battery. Never had ANY computer problems. Cars catching on fire is a different story though
Cargo Master
Joined: Jan 2001
Posts: 2,726
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From: Slatington, PA
Never hurts to go a little overboard, especially with the cost of an IDM. Can't add much more then Chris did. Where are you welding to the truck Jim? The GEM is a pain to get it where its located (under the dash below the radio).
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Postmaster
Joined: Sep 2007
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From: Mcafee, NJ
im going to be installing a ch#vy 2500 front suspension building a custom frame from the cab back and installing air bags all the way around
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Cause they have yet to figure out a way to get a solid axle inside a 7.3 Powerstroke while still allowing both components to still function.
Cargo Master
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From: Slatington, PA
How low do you think she'll sit after this is all done?
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What did you end up doing on this Jim? Pull everything out?
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From: Dade City, FL
I had my fifth wheel mounts welded to my truck's frame. The guy who did it used an angle grinder to make a nice shiny bare spot on the frame near the weld for the ground. THAT becomes the circuit loop. The guy said he has welded on dozens of cars and trucks over the years and never unhooked a computer or a fuse and never had a problem.