2005 Audi S4 4.2L Poor Idle Quality, Misfire, MIL Lamp on
This car has me running circles! I have done fuel pressure, compression and smoke tests, all good. removed intake to investigate, found nothing. replaced all coils and plugs with audi updated originals to no avail. then replace engine main harness. Missfires s...
FIX posted 1/9/2011
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Message Closed w/FIX
Vehicle Data2005 Audi S4
Trouble Codes
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Message Closed w/FIX
Vehicle Data
2005 Audi S4
VIN | WAUPL58E35 |
Engine | 4.2 L / 8 cyl / GAS |
Trans | 6-speed Standard |
Delivery | Fuel Injection / sfi |
Emissions | OBD-II Compliant |
Symptoms | Poor Idle Quality, Misfire, MIL Lamp On |
Occurs | Always |
Trouble Codes
16684 | random missfire |
16689 | cyl 5 missfire |
16690 | cyl 6 missfire |
16691 | cyl 7 missfire |