exit2 Posted 2 October, 2008 Share Posted 2 October, 2008 Not happy my Mondeo flew through the MOT apart from emissions. Not happy as been serviced regular and had a new CAT fitted 4 weeks ago. Now have to take it to a place that will do a diagnostic assessment and then hopefully fix it. So has anyone had this problem before and what is the min cost through to the max cost? Link to comment Share on other sites More sharing options...
Ponty Posted 2 October, 2008 Share Posted 2 October, 2008 I bet it's the new Cat mate. They take some burning to start functioning properly. Obviously it's no problem on new cars as they go three years without an emissions test, but a month, especially a month at reasonable mileage, won't be long enough to get it working as it should. Go out, give it some serious beans, high revving in every gear, and then a long blast on the motorway. That will help. Link to comment Share on other sites More sharing options...
exit2 Posted 2 October, 2008 Author Share Posted 2 October, 2008 I bet it's the new Cat mate. They take some burning to start functioning properly. Obviously it's no problem on new cars as they go three years without an emissions test, but a month, especially a month at reasonable mileage, won't be long enough to get it working as it should. Go out, give it some serious beans, high revving in every gear, and then a long blast on the motorway. That will help. The garage poured some stuff in the petrol tank and I took up the motorway at XXXXXX mph! Brought it back and they tested and no different. So having a Crypton diag and tune on Monday so will see. But I hope your right! Link to comment Share on other sites More sharing options...
Ponty Posted 2 October, 2008 Share Posted 2 October, 2008 I'd be surprised if it's something else. Our old Mondeo passed its MOT on Tuesday, after a couple of new front springs were fitted anyway. Ours doesn't get anything like a service and does 25k+ a year. Link to comment Share on other sites More sharing options...
exit2 Posted 2 October, 2008 Author Share Posted 2 October, 2008 Ours doesn't get anything like a service and does 25k+ a year. ours has only done 49k miles! and is 8 yrs old Link to comment Share on other sites More sharing options...
Ponty Posted 2 October, 2008 Share Posted 2 October, 2008 ours has only done 49k miles! and is 8 yrs old Ours is also 8 years old, we've had it a year, and it's done 67k (just over 25k since we got it). It's the 2.0 Zetec model; I don't know if that's the same as yours but the engine pulls quite well. Link to comment Share on other sites More sharing options...
St Landrew Posted 3 October, 2008 Share Posted 3 October, 2008 Before you completely condemn the catalyst converter, have you had the Lambda sensor checked..? If that's faulty the engine management could revert to another program and the emissions could be changed. Link to comment Share on other sites More sharing options...
Scummer Posted 3 October, 2008 Share Posted 3 October, 2008 Before you completely condemn the catalyst converter, have you had the Lambda sensor checked..? If that's faulty the engine management could revert to another program and the emissions could be changed. Yeah I had a car that failed it's emissions test a few years ago, the lambda sensor was the problem in my case. Link to comment Share on other sites More sharing options...
Handyman Posted 4 October, 2008 Share Posted 4 October, 2008 The program that St Landrew refers to is commonly called the "Limp Home" program. The owner may not detect the change in performance and only find out when things like the emissions are checked on the M O T. You may notice that the mpg goes down, and a change in driving characteristics occurs. The Limp Home program takes over when a fault occurs so that you can indeed get home and not breakdown on the road. Link to comment Share on other sites More sharing options...
saint_stevo Posted 4 October, 2008 Share Posted 4 October, 2008 Unsurprisingly the golf has had a new lamda sensor. £120 i think Link to comment Share on other sites More sharing options...
Baj Posted 4 October, 2008 Share Posted 4 October, 2008 Ive had the same, failed emmisions, was the lambda sensor Link to comment Share on other sites More sharing options...
exit2 Posted 7 October, 2008 Author Share Posted 7 October, 2008 Ponty wins! Faulty CAT even though it was installed 4 weeks ago. Have had that replaced and passed with flying colours! Only problem I have now is getting the daignostic fee back from the garage Link to comment Share on other sites More sharing options...
Handyman Posted 8 October, 2008 Share Posted 8 October, 2008 Ponty wins! Faulty CAT even though it was installed 4 weeks ago. Have had that replaced and passed with flying colours! Only problem I have now is getting the daignostic fee back from the garage The big question is, what made the other one fail so soon? Link to comment Share on other sites More sharing options...
exit2 Posted 9 October, 2008 Author Share Posted 9 October, 2008 The big question is, what made the other one fail so soon? Was just a faulty batch. They have had 3 returned for various faults. I was very impressed with the diag the garage gave me as it showed everything in the car is spot on. Link to comment Share on other sites More sharing options...
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