Erratic Idle When Cold 2000 A8l 4.2 [Archive] - Audi Forums

: Erratic Idle When Cold 2000 A8l 4.2


Kirk
05-03-2006, 05:03 PM
Idles up and down for 15-45 seconds when engine is cold. It has a new mass air and throws code P1558 throttle control valve. It also will on ocassion throw a transmission code P1857 load signal. When going to channel 060 the values are fine. A new throttle valve is $840. Any suggestions?