Today I was turning right at a light-controlled crossroads. As the traffic cleared and I turned, there was a loud clack, clack, clack sound, which reduced as I straightened up. It then diminished until it sounded like something touching the heater fan. As I was in heavy traffic, I continued the half mile to my destination. Another hard right turn made a slight noise. On the way home, I made an extended journey, but the car seemed fine.

My first thought was CV joint, but the car is only 2 months and 630 miles from a good MOT. I also wondered if I had picked up debris between the disc and the backplate.

Any thoughts on the matter? The car has done 73800 miles

2009 1.4 16v manual.

Edited 27 February27 Feb by Jocko

Check for the Dust plate. With that corner jacked up spin the wheel and listen for trapped stone. Checking for a broken spring needs more effort. 2 months ago / 630 miles ago means nothing. Things can break any day, even on the way away from a test.

Thanks. I appreciate that things can break at any time. My point was that the gaiter was fine then, and I haven't done 10,000 miles with dirt and grit getting in through a split rubber. It could be a broken spring, as I hit a nasty pothole about a mile earlier.

Further to this issue, I took the car out for the first time since the noise happened. When I turned sharply right, there was a fairly rapid tick, tick, tick, faster than wheel rotation. I stopped at the first junction, and with the car stationary, I applied full right lock, suspecting a power steering problem, but nothing. It only happened with the car moving.

My next thought was the fan! I turned the fan speed right down, and the system went off. I then made several sharp right turns, and no noise was evident. With the system back in Auto, the ticking returned. It appears as if there is something on the fan that contacts the blades in a sharp right turn. Is there any way to check this without a total disassembly? If not, I will just have to live with it.

Best check engine mounts.

It is the heater fan, not the radiator fan