My 2019 DS7 Crossback has had the serpentine belt and tensioners replaced.
Since then it has started making a horrible screetching noise when the engine is started and the fan starts working full blast. Anybody know what could be causing this?
It´s been back to the mecanic to replace the new belt, thinking it could be faulty, but it just continues with this sound.
TIA
DS7 Crossback screeching noise
-
Linda
- Posts: 2
- Joined: 02 Apr 2026, 13:26
DS7 Crossback screeching noise
Last edited by Linda on 02 Apr 2026, 14:11, edited 1 time in total.
-
mickthemaverick
- Moderating Team
- Posts: 20115
- Joined: 11 May 2019, 17:56
- x 7777
Re: DS7 Crossback screeching noise
When you say 'the car is switched on' do you mean the ignition switched on or the engine started? 
I used to be indecisive, now I'm not so sure!
I used to ride on two wheels, but now I need all four!
I used to ride on two wheels, but now I need all four!
-
myglaren
- Forum Admin Team
- Posts: 28416
- Joined: 02 Mar 2008, 13:30
- x 5571
Re: DS7 Crossback screeching noise
I had a similar fault with a C5 that was the alternator clutch.