JTS emissions MOT failure
JTS emissions failure. Although the car runs really well it failed the MOT because of emissions. I knew something was wrong only because the engine failure light has been on for the past year! The computer said Lamda sensor problem. One of the rear Lamda’s was changed and the emissions test did improve but not enough to pass. Next filled tank with high octane fuel and added fuel additive to improve gas emission and clean injectors. This did improve things but still not a pass. Next replaced one ‘top’ lamda sensor. Now this was an improvement and it did just scrape through the MOT. But I still think something is still not right. During the test the crank sensor warning came up on the computer. Could this be the cause of the poor emissions or could it be something else ? I would be very grateful for any advice.
Thanks for a great forum - Keith