P1703 FORD -

Question

no codes 2000 ford focus se 2.0 dohc rough idle

Answer 1

P1703 Brake switch out of self test range,

Rough idle can be from uneven cylinder compression to worn,to the ignition coil sorting internally, the strategy of the PCM does not have to code up a misfire until it exceeds a misfire value, With a rough idle you need to check the basic,