1991 Audi Coupe B3 facelift Emission
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Condition | Value |
---|
Audi gasoline straight-4 1.8 L DZ 110 HP | 850–950 rpm |
Audi gasoline straight-5 2.3 L NG 131 HP | 720–860 rpm |
Audi gasoline straight-5 2.3 L NG 134 HP | 720–860 rpm |
Audi gasoline straight-5 2.3 L 7A 165 HP | 750–850 rpm |
Audi gasoline straight-5 2.3 L 7A 168 HP | 750–850 rpm |
Audi gasoline V6 2.8 L AAH 172 HP, 245 N⋅m | 700–800 rpm |
All other modifications | 780–900 rpm |
Audi gasoline straight-4 1.8 L DZ 110 HP | 850–950 rpm |
Audi gasoline straight-4 2.0 L ABK 114 HP | 780–900 rpm |
No adjustment possible | |
Audi gasoline straight-4 2.0 L AAD 114 HP | 780–900 rpm |
No adjustment possible | |
Audi gasoline straight-5 2.3 L NG 131 HP | 720–860 rpm |
Audi gasoline straight-5 2.3 L NG 134 HP | 720–860 rpm |
Audi gasoline straight-5 2.3 L 7A 165 HP | 750–850 rpm |
Audi gasoline straight-5 2.3 L 7A 168 HP | 750–850 rpm |
Audi gasoline V6 2.8 L AAH 172 HP, 245 N⋅m | 700–800 rpm |
No adjustment possible |
Minimum engine oil temperature at VET | 176°F |
Audi gasoline straight-4 1.8 L DZ 110 HP | 0.5–1.5 % |
Audi gasoline straight-5 2.3 L NG 134 HP | 0.5–1.5 % |
All other modifications | 0.5 % |
CO content at increased idling speed | 0.3 % |
Audi gasoline straight-4 1.8 L DZ 110 HP | 0°00'±2°00' - before TDC + after TDC |
Audi gasoline straight-5 2.3 L NG 131 HP | -15°00'±1°00' - before TDC + after TDC |
Audi gasoline straight-5 2.3 L NG 134 HP | -15°00'±1°00' - before TDC + after TDC |
All other modifications | -6°00'±1°00' - before TDC + after TDC |
Increased idling speed | 2500–2800 rpm |
Lambda value | 0.97–1.03 λ |
Audi gasoline straight-4 2.0 L AAD 114 HP | 500 ppm |
Audi gasoline straight-4 2.0 L ABK 114 HP | 500 ppm |
Audi gasoline straight-5 2.3 L NG 131 HP | 500 ppm |
Audi gasoline straight-5 2.3 L NG 134 HP | 500 ppm |
Audi gasoline straight-5 2.3 L 7A 165 HP | 350 ppm |
Audi gasoline straight-5 2.3 L 7A 168 HP | 350 ppm |
All other modifications | 100 ppm |
To reduce environment impact and pass government inspections keep emission parameters at the level prescribed by Audi.
Please be noted that all capacities listed here are approximate. Check fluid levels when adding or refilling as recommended in your 1991 Audi Coupe user's manual. Keep in mind that all information here is provided “as is” without any warranty of any kind.
Before doing any DIY service please check your insurance policy and Audi warranty policy for your region. In some regions DIY service may invalidate your warranty.
Conquer your fears and never give up!
DIY car service is not as difficult as it looks like and it might save you thousands of dollars per year. It might be even fun and a good thing to do with your kids on a weekend to teach them how basic machinery works. It's really hard to screw something up and damage your car permanently if you use right tools, follow Audi Coupe service manual and use right parts and fluids in prescribed amounts. Even modern cars stuffed with electronics can be serviced in your garage or even in your driveway. Changing engine oil, brake fluid, ATF, replacing brake pads, and etc. It's all may be done by yourself in a mater of a couple of hours.
Doing basic service for your 1991 Audi Coupe you're not only saving money, but also also improving your technical skills and learning something new.
1991 Audi Coupe generations
In 1991 Audi offered 2 generations of the Coupe. Emission may vary in different generations. Be sure that you are looking at the rigt modification.