Volkswagen Passat B5 Discussion
1996 A4, 12-valve 2.8 AFC engine, 110K mi, mostly urban and suburban "miles from hell"
cold idle: rough; exhaust smells rich
warm idle: smoother, less odor; speed mostly 800 RPM, dropping intermittently and briefly to 775;
no error codes or MIL/CEL
long term fuel trim, warm idle: +9% bank...