1995 S6 keeps failing emissions ?
Thread Starter
AudiWorld Junior Member
Joined: Mar 2004
Posts: 12
Likes: 0
1995 S6 keeps failing emissions ?
A 1995 chipped S6 keeps failing emission on all tests - worst on HydroCarbon test.
Has had plugs replaced and O sensor replaced, actually made the test results worse.
No error codes, and drives well.
What to do ? Are there any local shops that can test emissions and make it pass the emissions test ?
Has had plugs replaced and O sensor replaced, actually made the test results worse.
No error codes, and drives well.
What to do ? Are there any local shops that can test emissions and make it pass the emissions test ?
Thread Starter
AudiWorld Junior Member
Joined: Mar 2004
Posts: 12
Likes: 0
Re: a couple of things - more info
Thanks for the reply - should have stated this in the first place.
Already tried the can of 44G - failed first emissions test after this.
Checked for exhaust leaks - no observable problems.
Already tried the can of 44G - failed first emissions test after this.
Checked for exhaust leaks - no observable problems.
Club AutoUnion
Joined: Mar 2000
Posts: 31,629
Likes: 49
From: Fort Collins Colorado
tough one - my guess is you need a good mechanic - you might post over in the Ur forum
see if Frank knows anyone
The local shops in Denver (Avalon, 303, etc) and SCR in Loveland might be able to help.
The local shops in Denver (Avalon, 303, etc) and SCR in Loveland might be able to help.
AudiWorld Member
Joined: Dec 2005
Posts: 197
Likes: 0
Carbon buildup on valves is likely on cars with lots of mileage.
Take a look at your printout, if HC shoot up on decel, carbon is a likely cause.
Maybe try a un-chipped ecu...retest after retest does get old......
Maybe try a un-chipped ecu...retest after retest does get old......
Trending Topics
Thread Starter
AudiWorld Junior Member
Joined: Mar 2004
Posts: 12
Likes: 0
Finally passed !
#6 was the charm
I took it to my exhaust guy, he actually checked the cats by drilling in to them (if they
are not bad, he just welds up the hole)... the right side cat was half gone
and the left was on its way. I had them replaced ($500) then drove the car
up and down the interstate at high speeds then went and got it
tested.... amazing how much the numbers came down, on all measures!
I took it to my exhaust guy, he actually checked the cats by drilling in to them (if they
are not bad, he just welds up the hole)... the right side cat was half gone
and the left was on its way. I had them replaced ($500) then drove the car
up and down the interstate at high speeds then went and got it
tested.... amazing how much the numbers came down, on all measures!
AudiWorld Stories
Bringing Audi to Life for Audi Fans
10 Strangest Audi Designs That Actually Made Production
Joe Kucinski
2027 Audi Q7 and SQ7: Audi Upgraded EVERYTHING!
Michael S. Palmer
Audi Unveils Absurdly Cool New Supercar: 10 Things You Need to Know!
Verdad Gallardo
The Highs & Lows of Every Audi C-Class Generation
Joe Kucinski
Top 10 Most Expensive Audis Ever Sold on Bring-A-Trailer
Brett Foote
10 Audi Features & Options We Miss the Most!
Joe Kucinski
Audi Recreates Crazy-Looking Speed Record Breaker From 1935
Verdad Gallardo
Coachbuilder Recreates the 1995 Audi TTS Concept
Verdad Gallardo
Every Audi V10 Car Ranked!
Joe Kucinski
Thread
Thread Starter
Forum
Replies
Last Post
KRS@AW
S4 / RS4 (B5 Platform) Discussion
3
Jan 31, 2006 04:47 AM
talltorontoguy
Audi 90 / 80 / Coupe quattro / Cabriolet
3
Aug 23, 2005 12:52 PM
grnmtnquattro
Audi 90 / 80 / Coupe quattro / Cabriolet
3
Apr 21, 2004 01:32 AM