Our '99 Kangoo 1.4 petrol has failed the MOT emissions test. The CO is over the limit, and HC is marginal.
The thing has never been quite right since the Tesco fuel debacle a couple of years ago. Both the Cat and lambda sensor were changed last year, about 25,000 miles ago.
The garage have played with it for a bit, but to no avail. Even the 'Italian tune-up' blast along the A303, and re-check before the cat cooled down didn't do the job this time. They are suggesting changing either the Lambda sensor (again), or the Temperature sensor, or both.
Does anyone have any other ideas?
The thing has never been quite right since the Tesco fuel debacle a couple of years ago. Both the Cat and lambda sensor were changed last year, about 25,000 miles ago.
The garage have played with it for a bit, but to no avail. Even the 'Italian tune-up' blast along the A303, and re-check before the cat cooled down didn't do the job this time. They are suggesting changing either the Lambda sensor (again), or the Temperature sensor, or both.
Does anyone have any other ideas?