Peugeot 407 making a grating noise

I have a Peugeot 407 1.8 petrol. Good Car, smooth, 125k on clock. It developed an issue this morning; when lifting my foot completely off accelerator I can hear a 'grating' kind of sound coming from engine. Accelerate again and the noise disappears. Any idea what it could be?

Asked on 27 June 2016 by Eire

Answered by Honest John

If this is happening in gear (not freewheeling) it's on the overrun, which is when the drivetrain of the car is turning the engine rather than the engine turning the drivetrain. So check all drivebelts for things like the alternator, PAS pump, etc. If not the aux belt, it might be the timing belt tensioner.

Tags: unexplained noises diesel engines

Similar questions

Volkswagen Golf 2.0 TDI rattle - is it related to the emissions problem?

You answered a question on 13 December about VAG emission changes. including this: "Latest on the 'fix' for 2.0 TDIs is that it increases the revs at which peak torque is developed by 300rpm and that...

Why is my Range Rover Evoque so noisy on start up?

My three year old Range Rover Evoque 2.2 diesel has started to make a very loud "clattering" noise when I start it in the mornings. The noise goes away after 20 - 30 seconds and settles down with normal...

Volkswagen Tiguan is really noisy since emissions fix - what should I do?

My Volkswagen Tigaun has just had its emissions fix. However, since getting the car back, I've noticed that the engine is much nosier. It used to be nice and smooth, but now it is making a growling noise,...

Related models