snurb
09-07-2011, 02:15 PM
Yesterday, my 1999 A6 2.8 Quattro started throwing the following codes:
16684 - Random/Multiple Cylinder Misfire Detected
16687 - Cylinder 3 Misfire Detected
16795 - Secondary Air Injection System Incorrect Flow Detected
This came 36 miles after I got it out of the shop for new valves, gaskets, cam shaft timing chain tensioner (right side), water pump, timing belt, thermostat, tensioner, roller, etc. Yep, the timing belt teeth had stripped off - after 154,151 miles!
The mechanic who rebuilt the engine said he did not think the codes were indicating anything wrong with the belt or timing since the car seems to be running smoothly.
Are the three codes related? Could the air injection system be causing the misfiring or should I be suspecting something else entirely? Any help will be greatly appreciated.
16684 - Random/Multiple Cylinder Misfire Detected
16687 - Cylinder 3 Misfire Detected
16795 - Secondary Air Injection System Incorrect Flow Detected
This came 36 miles after I got it out of the shop for new valves, gaskets, cam shaft timing chain tensioner (right side), water pump, timing belt, thermostat, tensioner, roller, etc. Yep, the timing belt teeth had stripped off - after 154,151 miles!
The mechanic who rebuilt the engine said he did not think the codes were indicating anything wrong with the belt or timing since the car seems to be running smoothly.
Are the three codes related? Could the air injection system be causing the misfiring or should I be suspecting something else entirely? Any help will be greatly appreciated.