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

[steve42]

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

[Manny_boy]

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.

[steve42]

Originally Posted by steve42

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

i 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