I have an 02 vec b that has developed an uneven Idle. some days its worse than others. engine pulls fine when accelerating and cruising.
I've changed coil pack, front O2 sensor, Blanked egr valve, checked manifold and flexi with no obvious signs of blowing. I do have fault code appear on the OBD reader that keeps coming back but doesn't put the light on P1686. About 4 months ago the throttle body was given a bit of a clean and was running fine until recently.
would a stretched chain or worn tensioner give idling problems but be fine on acceleration and cruising, or the throttle body code
also would this cause emission issues at MOT time as this is at the end of the month
I've changed coil pack, front O2 sensor, Blanked egr valve, checked manifold and flexi with no obvious signs of blowing. I do have fault code appear on the OBD reader that keeps coming back but doesn't put the light on P1686. About 4 months ago the throttle body was given a bit of a clean and was running fine until recently.
would a stretched chain or worn tensioner give idling problems but be fine on acceleration and cruising, or the throttle body code
also would this cause emission issues at MOT time as this is at the end of the month