# 2005 Mercedes - Weird Noise **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** clk-class, mercedes-benz\ **Created:** [February 15, 2022, 8:51pm UTC](https://community.cartalk.com/t/2005-mercedes-weird-noise/182516 "2022-02-15T20:51:08Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![matbass1994\_179540](https://avatars.discourse-cdn.com/v4/letter/m/3be4f8/32.png) [@matbass1994\_179540](https://community.cartalk.com/u/matbass1994_179540)\ **Post date:** [February 15, 2022, 8:51pm UTC](https://community.cartalk.com/t/2005-mercedes-weird-noise/182516/1 "2022-02-15T20:51:08Z")
I drive a Mercedes CLK and have done for the last 4-5 years. This, however, is a very recent problem. What I have noticed is that if I drive somewhere in which I only need to be out the car for a couple of minutes, say I’m nipping to the shop or filling up with petrol, within a minute of restarting the engine and driving off there’s this really weird sound which I can only describe as a whirring noise. It only ever happens when I restart the engine within a window of about 1-30 minutes after killing it. I can go to the gym for an hour and it won’t happen, I can leave the car overnight and it won’t happen - it’s only when I restart the car soon after I’ve stopped it where the noise happens and for the life of me I do not understand it. I’m wondering whether it’s something related to an alarm somewhere(?) but this has only been a recent issue, it never used to happen. Any answer/advice/suggestion would be much appreciated. Thanks! Matthew ---
**Author:** ![COROLLAGUY1](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/corollaguy1/32/7575_2.png) [@COROLLAGUY1](https://community.cartalk.com/u/COROLLAGUY1)\ **Post date:** [February 15, 2022, 9:13pm UTC](https://community.cartalk.com/t/2005-mercedes-weird-noise/182516/2 "2022-02-15T21:13:28Z")
Can you post a sound clip? ---
**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\ **Post date:** [February 15, 2022, 9:15pm UTC](https://community.cartalk.com/t/2005-mercedes-weird-noise/182516/3 "2022-02-15T21:15:27Z")
Which engine? How many miles? ---
**Author:** ![Nevada\_545](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nevada_545/32/41232_2.png) [@Nevada\_545](https://community.cartalk.com/u/Nevada_545)\ **Post date:** [February 15, 2022, 9:16pm UTC](https://community.cartalk.com/t/2005-mercedes-weird-noise/182516/4 "2022-02-15T21:16:59Z")
Noisy air injection pump, they are electric and sound like a leaf blower. ---
**Author:** ![matbass1994\_179540](https://avatars.discourse-cdn.com/v4/letter/m/3be4f8/32.png) [@matbass1994\_179540](https://community.cartalk.com/u/matbass1994_179540)\ **Post date:** [February 15, 2022, 9:41pm UTC](https://community.cartalk.com/t/2005-mercedes-weird-noise/182516/5 "2022-02-15T21:41:35Z")
I will post a sound clip tomorrow 🙂 ---
**Author:** ![matbass1994\_179540](https://avatars.discourse-cdn.com/v4/letter/m/3be4f8/32.png) [@matbass1994\_179540](https://community.cartalk.com/u/matbass1994_179540)\ **Post date:** [February 15, 2022, 9:42pm UTC](https://community.cartalk.com/t/2005-mercedes-weird-noise/182516/6 "2022-02-15T21:42:13Z")
Petrol Engine, 77.5k miles ---
**Author:** ![old\_mopar\_guy](https://avatars.discourse-cdn.com/v4/letter/o/6bbea6/32.png) [@old\_mopar\_guy](https://community.cartalk.com/u/old_mopar_guy)\ **Post date:** [February 15, 2022, 11:07pm UTC](https://community.cartalk.com/t/2005-mercedes-weird-noise/182516/7 "2022-02-15T23:07:47Z")
You have kept that car well past it’s expiration date.