# 2015 Volkswagen Beetle - Engine sounds and AC

**URL:** <https://community.cartalk.com/t/2015-volkswagen-beetle-engine-sounds-and-ac/168833>\
**Category:** Maintenance/Repairs\
**Tags:** volkswagen\
**Created:** [August 17, 2020, 5:03pm UTC](https://community.cartalk.com/t/2015-volkswagen-beetle-engine-sounds-and-ac/168833 "2020-08-17T17:03:53Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Jen51](https://avatars.discourse-cdn.com/v4/letter/j/cdc98d/32.png) [@Jen51](https://community.cartalk.com/u/Jen51)\
**Post date:** [August 17, 2020, 5:03pm UTC](https://community.cartalk.com/t/2015-volkswagen-beetle-engine-sounds-and-ac/168833/1 "2020-08-17T17:03:54Z")

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My engine is racing more now when I use the AC and when I turn car off it still runs a little and I turn off AC

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**Author:** ![Triedaq](https://avatars.discourse-cdn.com/v4/letter/t/65b543/32.png) [@Triedaq](https://community.cartalk.com/u/Triedaq)\
**Post date:** [August 17, 2020, 9:56pm UTC](https://community.cartalk.com/t/2015-volkswagen-beetle-engine-sounds-and-ac/168833/2 "2020-08-17T21:56:08Z")

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My only guess is that there is a vacuum leak somewhere in the AC system. This would explain the running on (it’s called dieseling) after the ignition is turned off.

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**Author:** ![lion9car](https://avatars.discourse-cdn.com/v4/letter/l/59ef9b/32.png) [@lion9car](https://community.cartalk.com/u/lion9car)\
**Post date:** [August 17, 2020, 10:14pm UTC](https://community.cartalk.com/t/2015-volkswagen-beetle-engine-sounds-and-ac/168833/3 "2020-08-17T22:14:03Z")

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Are you sure it’s the engine and not the cooling fan or fans? In most of the country right now, the cooling fans will be cranking away at top speed.

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**Author:** ![davepsinbox\_157004](https://avatars.discourse-cdn.com/v4/letter/d/73ab20/32.png) [@davepsinbox\_157004](https://community.cartalk.com/u/davepsinbox_157004)\
**Post date:** [August 18, 2020, 2:28am UTC](https://community.cartalk.com/t/2015-volkswagen-beetle-engine-sounds-and-ac/168833/4 "2020-08-18T02:28:18Z")

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I was wondering the same thing. Is dieseling even a thing any more with fuel flow electronically controlled? I guess a bad ignition switch might do it but I doubt that’s what’s happening.

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**Author:** ![VDCdriver](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/vdcdriver/32/30_2.png) [@VDCdriver](https://community.cartalk.com/u/VDCdriver)\
**Post date:** [August 18, 2020, 11:30am UTC](https://community.cartalk.com/t/2015-volkswagen-beetle-engine-sounds-and-ac/168833/5 "2020-08-18T11:30:27Z")

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> [@lion9car](#):
>
> Are you sure it’s the engine and not the cooling fan or fans?

+1  
I think that the OP is hearing the electric cooling fans running, and misinterpreting that noise as engine noise.

Note to OP:  
During very hot weather, those fans need to run for a couple of minutes after you shut the engine off.  
If they didn’t, your engine would be damaged.