Yup, going to get an obd 1 tester today. Car stalls out on me every once in a while when its cold, did it this morning, battery light came on a few days ago, but haven't seen it since. It doesn't feel as fast as it should be.
Codes read that my O2 sensor is detecting a lean condition, thermactor problems and some other egr issue. I'm on my last string with that egr pos, its been nothing but problems for the last two years. One more error code from it and its getting ripped off.
a quick summary................you inject it into your motor, let your car idle while it smokes like a freight train and it cleans all the nasty stuff you dont want in your engine out : its very popular from all the crap i've read about it