My son's 2004 Ibiza sometimes makes a Whistling noise and loses power in the air vents.
Anyone got any ideas? thanks in advance.
![2020 SEAT Ibiza 1.0 TSI 95 FR Sport [EZ] 5dr](http://images.honestjohn.co.uk/imagecache/url/crop/90x60/https/cdn.uk.prod.group-mobility-trader.com/images/cas/1eb7fadc719fc93e190570787515ae1e/3ab6540682dc34f38c4204a311549bf1.jpg)
![2021 SEAT Ibiza 1.0 TSI 110 FR [EZ] 5dr](http://images.honestjohn.co.uk/imagecache/url/crop/90x60/https/cdn.uk.prod.group-mobility-trader.com/images/fallback/coming-soon.jpg)
