Gm merlin help!!!!!!!!!

i have an 1999 chevy lumina 3.8 6 cyc .the cataylac converter is getting red hot i have change the plugs and put a new converter on it still runs like crap.anyone can help me would be appreciated.thanks steve

If you cat. converter is getting red hot it means too much unburn fuel is reaching the cat. Check your injectors - one of them may be leaking, excess fuel will cause a cherry red converter. Also, how old are your o2 sensors? I believe your car has two, one before the converter and one after. Bad o2 sensors could cause a rich condition.

Also, you changed your plugs and wires, but what condition are your coil packs in? I would do a spark test on each tower of the coil packs. White spark = good;
off colored brown or tan spark = weak.

i have an 1999 chevy lumina 3.8 6 cyc .the cataylac converter is getting red hot i have change the plugs and put a new converter on it still runs like crap.anyone can help me would be appreciated.thanks stevei found the problem all six of the fuel injecters were clogged with rust replace and new gas tank runs like a top now(fur now).thanks