Trailblazer welding erratically

[Toadcan]

I had the tech change the brushes. Nothing changed. Is that the same thing as the slip rings? I really wish he’d have tested it after he changed them. I’m sure he’d have noticed something wrong still....

[Toadcan]

My Trailblazer 302 is welding very erratically. It will weld fine then suddenly pulse to a higher amperage which blows the puddle apart. Very frustrating. Any ideas?...

My trailblazer 302 is welding very erratically. It welds good then suddenly pulses to a higher amperage which blows the weld apart then settles back to welding. It’s very frustrating. Any ideas?...