Sounds after engine run?

DC6839 · Aug 12th, 2020, 06:57

After a run, and turning off the engine, in my newly aquired V70 D3, there is a whirring/buzzing sound from the engine area and a sound like "gas" being expelled. What is this, and is this normal, please?

emtor · Aug 12th, 2020, 18:11

Same with my 2.4D, no idea what it is.

Gregb23 · Aug 12th, 2020, 20:18

My 2011 D3 also has noises after turning off. I'd assumed it was to do with flowing coolant and oil to keep temps down when stopped. Turbo timer type thing. Either that or some relays doing something.

filisur · Aug 16th, 2020, 21:20

My 2013 D3 also makes it, seems to come from a valve? located rear top right of the engine, Can feel it vibrate when making noise.

Tannaton · Aug 16th, 2020, 22:11

There's a number of valves that are operated after engine shut off which are controlled on a pulse-width modulation bases (i.e. short sharp pulses rather than variable voltage).

The main ones are the fuel pressure regulator, and the anti-shudder valve (if fitted).

It's normal....

v70norge · Sep 7th, 2020, 20:16

2013 V70 D3 with same symptoms, changed vacuum valve part nr: 31293964 and that fixed the problem. The faulty valve leaked air into the vacuum system, when the buzzing sound stopped, i noticed that the brake pedal was "stiff", because there was no vacuum left in the system.

Nickthecook · Jan 16th, 2021, 15:22

I'm wondering if the noise you're hearing is the swirl flap motor calibrating. It does this about every 5 starts on my Euro4 D5 and makes short bursts of whirring amd clicking sounds. This is perfectly normal

Aug 12th, 2020, 06:57	#1
DC6839 Goldwing Rider Last Online: Oct 24th, 2023 06:17 Join Date: Jan 2006 Location: Lincolnshire	Sounds after engine run? After a run, and turning off the engine, in my newly aquired V70 D3, there is a whirring/buzzing sound from the engine area and a sound like "gas" being expelled. What is this, and is this normal, please? __________________ 2013 Volvo V70 D3 2004 Volvo V70 D5 -MOT Now Nov. 2020 (yeah !)- SOLD 1993 Honda Goldwing GL1500SE(P) Sadly SOLD Even more Radio Controlled Model Aeroplanes

Aug 16th, 2020, 22:11	#5
Tannaton Bungling Amateur Last Online: Yesterday 20:51 Join Date: Aug 2014 Location: Beverley, East Yorks	There's a number of valves that are operated after engine shut off which are controlled on a pulse-width modulation bases (i.e. short sharp pulses rather than variable voltage). The main ones are the fuel pressure regulator, and the anti-shudder valve (if fitted). It's normal.... __________________ 2011 XC90 D5 Executive 2003 C70 T5 GT 2012 Ford Ranger XL SC 1977 Triumph Spitfire 1500 1976 Massey Ferguson 135

Jan 16th, 2021, 15:22	#7
Nickthecook Newbie Last Online: Yesterday 22:21 Join Date: Feb 2015 Location: Newtown	Swirl flap motor calibrating? I'm wondering if the noise you're hearing is the swirl flap motor calibrating. It does this about every 5 starts on my Euro4 D5 and makes short bursts of whirring amd clicking sounds. This is perfectly normal

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Aug 12th, 2020, 18:11	#2
emtor Member Last Online: Apr 4th, 2024 19:44 Join Date: Jan 2017 Location: Kalix	Same with my 2.4D, no idea what it is.

Aug 12th, 2020, 20:18	#3
Gregb23 New Member Last Online: Aug 1st, 2023 14:10 Join Date: Jun 2020 Location: York	My 2011 D3 also has noises after turning off. I'd assumed it was to do with flowing coolant and oil to keep temps down when stopped. Turbo timer type thing. Either that or some relays doing something.

Aug 16th, 2020, 21:20	#4
filisur New Member Last Online: Sep 2nd, 2022 19:20 Join Date: Oct 2016 Location: wigan	My 2013 D3 also makes it, seems to come from a valve? located rear top right of the engine, Can feel it vibrate when making noise.

Sep 7th, 2020, 20:16	#6
v70norge New Member Last Online: Apr 11th, 2024 18:10 Join Date: Sep 2020 Location: Norway	2013 V70 D3 with same symptoms, changed vacuum valve part nr: 31293964 and that fixed the problem. The faulty valve leaked air into the vacuum system, when the buzzing sound stopped, i noticed that the brake pedal was "stiff", because there was no vacuum left in the system.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)