[A4] How much for a catalytic converter for my A4?

aaron jungle at hickorytech.net
Wed Jan 23 08:45:31 PST 2008

Go talk an Audi tech...and ask them how many times they replace A4 cats.  Also 
quite common on VW Golf/Jetta MKIV's w/ the 2.O.


-SABIS Educational Systems Network Administrator
--Carpe Diem

On Wed Jan 23 11:35 , "Peter Kirby"  sent:

>I have never had to replace a converter in any of my cars (VW Golf --
>290,000 km, 1988 Audi 90 -- 287,000 km, 1990 Audi 90, 310,000 km, Audi
>A4 -- 160,000 km, and a couple of Subarus that have gone over 250,000
>km).  Granted much (~70%) of my driving is highway.
>Did Joyce's mechanic actually read the CEL codes?  Even if the CEL
>code for a bad converter is indicated, chances are it's the 2nd O2
>sensor and not the converter that is bad.
>A bad converter will either be plugged up or blown apart.  If it is
>blown apart power loss will not be a problem and it will be LOUD.  If
>it is plugged up it will be consistent in terms of poor power.
>At work we had a Ford van that was having a hard time getting up big
>hills (full 15-passenger van pulling a trailer).  The Ford dealer told
>us it was the converter that was plugged up.  He changed it (~ $600, I
>think) and 100 miles down the road we realized it was no better.
>Turned out to be the fuel filter!!
>Be careful unless paying $1000 for perhaps an unneeded converter is
>your idea of a good time.
>On Jan 23, 2008 11:25 AM, aaron jungle at hickorytech.net> wrote:
>> If your car has over 140k on it...the cat is prolly toast....especially if you 
>> running any aftermarket software or let the car run rich for long periods of 
time.  I
>> found it cheaper to get a "high flow" cat from Techtonics Tuning that to buy an 
>> one.  Plus the hi-flow cats are a great perf. mod.!
>> ..aaron
>> -SABIS Educational Systems Network Administrator
>> --Carpe Diem
>> On Wed Jan 23  8:17 , "Joyce Furono"  sent:
>> >My car starting acting up recently where when I was shifting down a gear to
>> >slow down, and then shifted back up to speed up, it would kick back, lose a
>> >little power for a second, and then decide that it could give me power after
>> >all and then speed back up again. The check engine light would blink for a
>> >few seconds and then go off. Then after a couple of times of that, then the
>> >check engine light would just stay on. He's saying it's clogged.
>> >
>> >This didn't happen all the time. It mostly happened when I was taking a
>> >particularly sharp turn at speed, or when I was trying to go up a hill in
>> >the middle of traffic. Basically when I find myself needing a little more
>> >power than if I were driving on flat, straight ground. So something is
>> >definitely not working right.
>> >
>> >As a little backstory, my husband got my car into a wreck that essentially
>> >damaged the underside of my car so that it practically ripped the oil pan
>> >off, or ripped a hole big enough that it lost all it's oil in a very fast
>> >amount of time. So that resulted in us having to replace the transmission
>> >and get a new oil pan. So my mechanic did that, gave my car a tune up it
>> >probably desperately needed and sent me on my way. And it worked fine for
>> >about two weeks.  I'm thinking it was either the accident that precipitated
>> >the cat converter malfunction or my not having given the car a tune-up for a
>> >year. Although all in all, I drove the car a total of 2,000 miles last year
>> >as I started taking public transportation to work.
>> >
>> >I ask about the oxygen sensor mainly because it's a relatively inexpensive
>> >part (at least compared to the CC) and some car care sites recommend you
>> >replace the oxygen sensor when you replace the cat converter.
>> >
>> >Joyce
>> >
>> >On Jan 23, 2008 5:16 AM, Peter Kirby 4pkirby at gmail.com> wrote:
>> >
>> >> Why does he think the CC needs replacing?  Ditto re O2 sensor.  You
>> >> may want a second opinion.
>> >>
>> >> Peter
>> >> 2001 A4 1.8tq
>> >>
>> >> On Jan 23, 2008 2:17 AM, Joyce Furono furonobono at gmail.com> wrote:
>> >> > Hello all,
>> >> >
>> >> > My mechanic just informed me that I need a new catalytic converter for
>> >> my
>> >> > car. I have a 2001 A4 1.8T Quattro. I've been going to this mechanic for
>> >> > years and have never felt that he was ripping me off. He quoted me $950
>> >> for
>> >> > the job. That seemed a little high to me since it looks like I can
>> >> purchase
>> >> > one for about $200-$300 online. (actually even cheaper than that). And
>> >> it
>> >> > doesn't seem as if it should take hours and hours to install the new
>> >> one.
>> >> > But I'm not sure.
>> >>
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