Well, I have a '88 Pontiac 6000. Just yesterday i was driving it fine and then stopped at a stop sign. All of the sudden it wasn't going very fast. Now I've had a little issue with it in the past where if I didn't step on the gas it would want to die but that's if I didn't let it heat up for a little bit. And it wanted to die. I pulled off to the side of the road. Every time I started it and didn't press the gas it would die. When I got it going it would take a long time for it to get up to 55mph and if I let off the gas a little it would fall. I'd have a hard time driving it. My friend had me drive it a little. We pulled over and put into park and he had me rev the gas then it started to smoke. He showed me that the catalytic converter was red hot. Now I talked to the closest mechanic and he said it may not be the converter it may be something else. So does anyone know what it could be? I just don't want to be duped by this mechanic and have to pay a lot for something simple. I only chose him because he's the closest to where I live.