2007 Hyundai Elantra Q&A
2007 Hyundai Elantra Question: What is the high-pitched whistling noise when my a/c is turned on?
COULD BE IDLER BEARING GOING BAD AND ONLY MAKES NOSE WHEN UNDER A/C LOAD - globalhelper
Also have the ac compressor belt checked could be loose or defective. Has it's own belt. - pushrod
It could be your sway bar. If it is snapped it will make a thumping noise when you steer and will make no noise when going straight. It needs to be fixed immediately.http://www.lightdeal.co.uk/ - wenyan