00 Volvo V70R AWD Humming/whirring

Daiffi · Post by **Daiffi** » 22 Sep 2015, 13:23

Hey all ! I have tried to search the problem from other volvo forums but it seems here is more volvo experts.

I have this weird humming/whirring noise in my volvo now. I start the car the noise begins and wont stop until i shut down engine. It doesent matter am i driving or in park. And when i shut down the engine noise continues 1-2 seconds and you clearly can hear something shuts down. Car has Ardic but i dont know does that anything. I link video from youtube wich i have recorded. You cant hear the sound clearly when in engine, but when i start roaming around car you can hear the high pitch noise outside. To inside that sound goes more like humming or " Huuuuuu"

https://www.youtube.com/watch?v=L-D_uYa ... e=youtu.be

Explanation can be little messy but i cant do better for english.

waffleshill · Post by **waffleshill** » 22 Sep 2015, 15:11

Fuel pump? CCM fan? ECU fan?

Post by **cuhfs** » 22 Sep 2015, 17:53

Alternator bearing? Here is what I would do... I recommend a Mechanics-Stethoscope here's the sponsor link from this MVS where I put in Mechanics-stethoscope https://www.amazon.com/s/ref=nb_sb_noss? ... tethoscope

It may help you find the noise.

clifford06 · Post by **clifford06** » 22 Sep 2015, 20:38

Greetings. Check water pump. Could be bad bearing.

Veilleuxpbd · Post by **Veilleuxpbd** » 22 Sep 2015, 20:59

Sounds like a fuel pump, if you remove the cargo liner, youll see a black plastic piece covering some metal (where you would access said pump) along the base of the back of the seats (whre they fold). Listen there, if the sound is coming from there, its the pump, it the sound comes from the engine compartment, its likely a bearing, but since it keeps on spinning 1-2 seconds after you shut down the engine, i'd put my money there, so to speak

Daiffi · Post by **Daiffi** » 23 Sep 2015, 13:43

Veilleuxpbd wrote:Sounds like a fuel pump, if you remove the cargo liner, youll see a black plastic piece covering some metal (where you would access said pump) along the base of the back of the seats (whre they fold). Listen there, if the sound is coming from there, its the pump, it the sound comes from the engine compartment, its likely a bearing, but since it keeps on spinning 1-2 seconds after you shut down the engine, i'd put my money there, so to speak

Yeah i also think strongly its fuel pump. You can hear it very loudly when you put ear to passenger side back wheel. And thanks for the instructions !

Post by **scot850** » 23 Sep 2015, 15:06

How full is your fuel tank? The pumps get noisy as they get older, but don't like to be sitting in a low fuel level tank as they run hotter in this scenario. If you fill you tank, is it as noisy?

Neil.