Audi A3 Engine Idle High

When My Car Is Up To Temperature It Idles At Around 1200rpm, It Should Be Well Under 1000rpm. Under Full Throttle It Blows A Little Black...

Hi, My Symptoms Are As Follows: ( 1 & 2 Happen Intermittently) 1) The Car Idles At 2000 Rpm (normally Just Below 1000rpm) 2)...