There is a device called "AntiZap" made by SPX-OTC that connects to battery on newer cars that protects the PCM and electronic components when welding.
You can also disconnect battery, PCM and Alternator.
Place MIG/TIG welding ground as close to weld target as possible.
The PCM will re-learn mormal operating parameters within a few hundred miles of normal driving.
Friday, September 4th, 2009 AT 7:13 AM