p5 running funny

[MacProtege5]

this didn't happen for quite some time, but it just keeps getting worse and worse, and now its at the point where i can't even drive the car. after the car is fully warmed it would feel like the engine was misfiring, it would buck a little then go away, and like i said it would just keep getting worse and worse. now i know my car burns a little bit of oil so i really think the cat is clogged up and its not allowing the car to flow out the exhaust gases. and i also got a code for the first 02 sensor signal being low. this is possible right? for the cat to be blocked not allowing the engine to run correctly? and possibly foul one or both of the 02 sensors?

 

[RyanJayG]

I had to take my MP3 to the dealer for a CEL, it turned out that the catalyst was falling out of my pre-cat. They replaced it under warrantee thankfully.

 

[Matthew]

would this same thing happen if you didnt have a cat at all?

 

[RyanJayG]

uh........ yeah

 

[Matthew]

i guess i have to have that ecu fix then before i get my header/midpipe combo

 

[changedman]

what ECU fix, does the P5 have an ECU firmware fix?

 

[Matthew]

apex motorsports sells some fix that tricks the computer into thinking both cats are present...it works for mp3's also

 

[changedman]

ohh, nevermind

 

[MacProtege5]

ok, update on the situation, it was not the exhaust that was causing the car to run funny. it was my ignition wires, the little ones that go to the coil packs, it was the connection on the one closer to the passenger side, the clip was loose for some reason