Hi all,

Just joined on the advice of a friend. I have a 98 S reg 1.6 petrol fiat Bravo and have been very happy with it for the last 4 years. This February it needed a new exhaust system for MOT as it was blowing.
I bought one from 'Eternalcar' Germany on ebay, when it was fitted the car would not run on 4 cylinders. Conclusion was that the exhaust was blocked. The company were really good, sent a new one, sent a courier to collect faulty one but the new one was exzctly the same, engine runs lovely with no exhaust, fit the new exhaust and the car is running on 3 again.
Contacted 'Eternalcar' who took all the car's details, including chassis number. They said the exhaust was the correct on so it must be a faulty batch. They have refunded me in full and told me to scrap the new exhaust, they don't want it back.
So I ordered another exhaust system from a different company, different make and lo and behold the engine is misfiring again. Could it be the Cat? Any help or advice gratefully received.
Thanks, Mary.

The CAT could be failing /collapsing after a good few years of use.

Soemthing could have been damaged during the fitting, maybe the lambda sensor...

You should get the engine management unit diagnosed for fault codes.