Not a DSM but still need help

[1lowDSM]

ok its the lex sc400 I think were having ome tranny problems... the auto tranny is what it has.. but heres the thing no matter hjow much gas i give it it will only got up to like 2 or 3 grand ?? and not tranny related it reaks of fuel?? please help

[1lowDSM]

found some more things wrong! after i drove it.. it feels like it has one cylender! then as i was going down the road the see sparks coming from the back like somthing really hot had just fallen off... so i get it back home trys to die on me the whole time get it in the garage turn the lights off cuz i could smell buring(light in the garage off) and look around the car and i see cherry red aunderneeth the car... i cant tell what it is ? i have never seen these things b4.... alsmot looks like part of the exaust system but im not sure i know all you guys have seen your turbos turn bright red from heat well thats how these things looked!! very confused

[Gunner]

Sounds almost like the cat is clogged up. That seems weird on a car of that age, but that's what it sounds like. Either that, or someone jammed something in the tailpipe. That would account for the glowing, or if the motor is not firing it is dumping fuel into the exhaust which is burning in the cat. Make sure it has spark, and make sure the exhaust can flow freely.

[BlackTalon]

Gunner's on the right track. Something like that happened to my folks car years ago. Cat pooped out, killed O2 sensor, car ran like crap and wouldn't rev up.

[DSM614]

Ive seen new cat's on car's fail within' a day or 2...Also...the block that's in the cat might of came loose from heat and pressure and maybe cloged up a resonator....hit the bottom of the cat when its cold to see if your can hear it clunking around in there...