Just today i started my car and it was kind of bouncy. I've had my check engine light on for sometime. I had it checked a while ago and they told me it was one ofmy o2 sensors for the front. I never had it replaced and i just had my car checked again and they said something about my catalyst.
They asked me if i was smelling rotten eggs which i wasnt but now i do. my car has lost a lot of power. so do i need to replace my cat now. Also when ever i drive it now and i try to give it a lot of gas my check engine light flashes.

pretty sure i need to replacemy catat this point but just making sure
thanks

 

the egg smell it the giveaway that the cat is bad

 

Bad o2 sensors can cause cats to fail. A friend of mine drives a Taurus, her check engine light was on for over a year because of a bad o2 sensor. I told her a year ago to get it fixed or she would be buying a new cat, well she didn't and now a year later she is *****ed that she is buy a new cat and o2 sensor.

Not saying thats what you did, just saying it is common. A6 are also known for bad cats.

Jeff

 

any good places where i can find a good deal on the cats? Maybe someone has used cats with low miles. What about using universal cats?

 

im in the same boat as you buddy,i asked the dealer for some prices and they said $1,100 each,but there is websites that have aftermaket cats for about $400 each ,i think its called shokan.com