Citroen C3 Exhaust Manifold Problems

After about 20 minutes driving the engine temperature warning light comes on with a warning to stop the engine immediately. This has happened 3 times randomly in last month. Each time after going down long but not steep hill, with air tempe...

Had a new exhaust done to the car has sound like it was bowling from the front got back and it still sound it bowling from under neath the car

There is a noise coming from the engine bay that sounds very much like a blowing exhaust. It gets louder on engine load and speed increase, but is not really audible at idle. Engine has approx.163, 000 miles. Vibration can be felt in pass...