I got a 2001 olds alero it runs rough misses ive changed coil packs checked control module replaced cat. conv. it still runs rough , misses i forgot the converter gets cherry red i also replaced plugs and rubber boots

SOURCE: 2002 Alero 2.2L is miss firing and burning too much gas

replace ignition system, start with coils, and coil pack housing under engine top cover. The plastic coil cover may be arking out. some people will tell you to look for "spider webs" on the plastic cover, don't you believe it!!! They go bad quite ofter and cost $50 a shot. also check your plugs, ONLY use autolite or ac delco REGULAR plugs, avoid bosch AT ALL COSTS.

SOURCE: 2000 olds Alero shutting off while driving

Check the 02 sensor and the ignition switc.

SOURCE: 99 oldsmobile alero

I would get the car in to a mechanic right away. Sounds like the converter might be plugged. This has been known to cause car fires.

SOURCE: car loses power, runs rough, like it is trying to choke itself

YOU have a bad coil pack. they are about $50. and not too hard to replace. the trick is finding the bad one. the good news is there are only 3 to choose from ( if its a v6)

SOURCE: missing at low idle, sounds better at high idle

check plugs cap coil air filter too.