gavin_t 184 Report post Posted October 7, 2019 I will start by saying the car may have done this for ages and I just haven't noticed it as I usually have some kind of background sound like the radio on. Noticed recently a faint woosh/dump valve kind of noise coming from behind the dash intermittently when I have the A/C on. Kind of ,like something is releasing pressure. Only very quite but now I have heard it once I notice it Everything is working as it should just wondered if anyone else has come across similar. Share this post Link to post Share on other sites
Twigman 93 Report post Posted October 7, 2019 Mine does it too. It almost sounds like the car is breathing. 1 gavin_t reacted to this Share this post Link to post Share on other sites
gavin_t 184 Report post Posted October 7, 2019 12 minutes ago, Twigman said: Mine does it too. It almost sounds like the car is breathing. Maybe it has just taken me about 4 years to notice it then Share this post Link to post Share on other sites
Twigman 93 Report post Posted October 7, 2019 8 minutes ago, gavin_t said: Maybe it has just taken me about 4 years to notice it then My car is 5 1/2 years old and I only noticed it about a year ago......we're on the same schedule, it seems. 1 gavin_t reacted to this Share this post Link to post Share on other sites
GravelRash 62 Report post Posted October 7, 2019 Mine has always done this. I've noticed that the noise ties in with the air-con pulley in the engine bay starting to spin. I've just therefore assumed that I'm hearing the pulley spin. 1 gavin_t reacted to this Share this post Link to post Share on other sites
Subota Boy 402 Report post Posted October 7, 2019 My car is 6 years old and started doing this in May. Sounds like a sort of grinding noise that changes pitch. Breathing sounds a great description! When I hear it next time I will fiddle with the aircon switch and see if it changes anything. Useful thread this!! Share this post Link to post Share on other sites
gavin_t 184 Report post Posted October 9, 2019 On 10/7/2019 at 7:03 PM, Subota Boy said: My car is 6 years old and started doing this in May. Sounds like a sort of grinding noise that changes pitch. Breathing sounds a great description! When I hear it next time I will fiddle with the aircon switch and see if it changes anything. Useful thread this!! Wouldn't say mine was a grinding noise but like air been released. 1 Subota Boy reacted to this Share this post Link to post Share on other sites
Lauren 2259 Report post Posted October 9, 2019 I've heard this on mine. Seems to be what they do, don't worry about it. Share this post Link to post Share on other sites