Hopefully i can help..
Does the car/engine still perform well / or start up as normal hot or cold?
What was the reason for changing the Cat and what testing was done prior to changing and what was the results/fault codes as such?
What engine size / mileage?
yes the car still performs well and starts up normal but gets hot i had the car in for an mot test and it failed on the co2 emissions so they said to put a cat cleanner in to try to clean the cat but they said the cat cleanner didnt work it had reduced it but not enough so they said it needed a new cat.
engine size is 1.6 and mileage is(###) ###-####/p>
Hi..there thanks for your responce..
Ok..If the car still isnt passing emissions even though a new cat has been fitted then it means the faults elsewhere,unless the fault memory hasnt been cleared..this can be done with a scanner or by trying the battery disconnection procedure by removing the negative terminal for about 30min and then hook the terminal back up and then see if the lights still on,sometimes works depending on the nature of the fault..however seeing as the warning is still present you certainly need to find out exactly what codes its storing and then based on results investigate further.the engine light means the cars ECU has stored P fault codes..those need to be retrived before any other parts at expense is replaced..it prob likely you may have failing lambda sensor / MAF fault or air leak between that and the manifold / exhaust manifold leak / or the cat is the worng not type approved catalytic converter..But i would certainly advise at this point finding out what faults codes you have to get clearer idea what your dealing with and what steps you need to take next.I do hope this helps