My car is due for the smog test again, but it it is running rich when cold. Most likely it will not pass!
If somebody has had similar problems, perhaps they can post some tips for possible remedies.
Thanks!
- posted
18 years ago
1985 Audi 4000S running rich...
Loading thread data ...
- Vote on answer
- posted
18 years ago
Martino, If it is equipped, you should replace the oxygen sensor on the car - you can do that cheaply using a generic Bosch one and splice it into the Audi harness connector on your old sensor. The car may also have a problem with the thermo-time sensor - activating the cold start injector and richening up the mixture for an unnecessarily long time. You should get your hands on a Bentley manual for the car if you're going to troubleshoot the fuel system by yourself. Cheers! Steve Sears
1987 Audi 5kTQ 1980 Audi 5k- Vote on answer
- posted
18 years ago
- Vote on answer
- posted
18 years ago
On Fri, 16 Sep 2005 16:18:34 -0400, "Steve Sears" wrote: Thanks, will check into these items. I believe it already has a fairly new Bosch oxygen sensor, but the ctalic converter is a cheap $75 dollar type. Perhaps that may be the problem as well.
Thanks again.
- Vote on answer
- posted
18 years ago
Martino, IIRC, the cat does not feed back into the engine (on your 1 oxygen sensor car), other than increasing backpressure. Cheers! Steve Sears
1987 Audi 5kTQ 1980 Audi 5k 1962 and '64 Auto Union DKW Junior deLuxes (SPAM Blocker NOTE: Remove SHOES to reply)