Rich mixture bank 1 , code PO 172 is present .Bank 1 has black dry plugs (1 MONTH OLD) . Bank 2 runs good with good clean plugs . Wouldn't mass air flow sensor ,fuel pressure ,or map sensor affect both sides ? there's a slight miss at cold idle when in drive. It sometimes goes completely away as you warm it up n drive it at hwy speed. It runs great at 70 mph. There are also times it bucks and kicks hard on acceleration . When its running good it even idles great. It has dual cats one directly off of each exhaust manifold. What does that leave other than bank 1 oxygen sensors or bank one exhaust ?
only bank one is actually running rich. All 3 plugs are black on bank 1 ,PO172 on 2004 Chrysler Concorde
by jrocco in Quitman, TX on June 13, 2013
ANSWER by globalhelper on June 14, 2013
poss inj issues.have someone read live data stream and ck inj pulse width