My mechanic and I solved hard start, and rough idle, however the car still runs rich. Leaves black spots on garage floor, and soot on exhaust tips and bumper.
Where should we start? so I can point in right direction; anybody.......

 

How old is the O2 sensor?

 

Just check folder no record of changing that part, car was in storage for three years before I purchased it in 2009. New injectors, TPS, ECM, and fuel pump. Probably hasn't been change in years, huh?

 

Gotta determine which to get 1-4 wire with or without connector.