Help! 2003 Ford Focus ZX5 - O2 sensor
ok I have a 2003 ford focus zx5 2.0l dual overcam.....heres my problem.
got the sensor 1 bank 1 error, so we replaced both O2 sensors, the upstream and downstream.
my car still idles funny and rough and the check engine light is on.
any ideas/suggestions of what we can try next before i am forced to take it into the dealership.
thank you for all the help and advise in advance