Hi all just joined, I own 2.0 ltr petrol 1996 Galaxy took it for mot, it failed on Co emisions only on the idle though, changed Lambder through advice from Garage took back to Garage to just check before re-booking they said was reading ok, so re-booked for re-test the next day, and the bloody thing failed on the same again. Had diog done through advice from Garage came up with lambder, so changed that again but still failed on same again the idle Co was slightly too high. Have done all the obvious and non obvious checks and ran out of ideas, has anyone got any ideas please thanks. Viper