I've searched and some of the symptoms match mine. Any ideas?

http://impalassforum.com/cgi-bin/ult...;f=33;t=005780

 

which symptom do u have...the one where u mash on the gas and it feels like u hit awall ...let of and hit it again and u are cruising liek nothing happened??

same thing happened to me a few times...i would like to know also??

 

When Jon94Zs cat clogged the car got super quiet, my cat makes some noise when its cold but other wise I have no clue how its lasted this long.

 

I'm sorry if I didn't make it clear earlier, but that post on the Impala forum is mine. I didn't feel like typing everything twice. Those are all the symptoms I am having. My gas mileage sucks also. Thanks.
Don

 

ive posted similar threads like this many times.....got no real answers......
i would like to know some symptoms off clogged cats?
maybe that will help find an answer

 

bad gas mileage, loss of power (esp in upper rpms), excessive heat in the exhaust manifolds (sometimes get red hot), quiet exhaust...thats what i can think of right now. best way to tell is to have your cats tested, i think they test the back pressure or something, ask a dealership.