Welding on automobile

[NAVYSNIPER]

I have a question concerning welding on newer vehicles with electronic computer systems. Are there any special precautions you need to know, if you plan on doing any welding on the exhaust/frame without causing damage to the electronics or computer systems??? I wanted to do some minor welding on the exhaust system, but am concerned it may cause damage to electronics. Any information would be greatly appreciated I haven't welded for quite a few years and with all the new vehicle systems didn't want to run into any possible problems. Thanks ahead of time for any assistance you can muster.

 

[CA_Bgrwldr]

It is recommended to disconnect the battery whenever welding on a vehicle, though most I know don't. To protect the ecu, it should be disconnected from the harness.

If you can remove the section needing welding, it would be a lot easier to weld it on a bench than under the vehicle.

 

[SidecarFlip]

So long as you place your physical ground as close to the to be welded part as possible, the chance of stray current being developed is very minimal at best. I never disconnect the ECM and never have had an issue.