V70 Steering: Whiny hum when turning, when cold

[Bashy]

Hi folks

Came across something new yesterday morning and my 1st thoughts was power steering belt?
When i turned the steering wheel, there was a whine like hum noise, once i'd driven a few miles, it went away, is this the power steering belt slipping or?
To be honest, not heard a belt slipping sound like that before, fan belts are more of a high pitched squeal lol

[Dippydog]

Could it be the power steering pump itself? Have you checked fluid level?With the aid of an assistant start the car-bonnet open- and get assistant to turn steering wheel while you listen to see if you can pinpoint the noise-assuming of course that the noise replicates itself.

[Bashy]

Originally Posted by Dippydog

Could it be the power steering pump itself? Have you checked fluid level?With the aid of an assistant start the car-bonnet open- and get assistant to turn steering wheel while you listen to see if you can pinpoint the noise-assuming of course that the noise replicates itself.

The pump was allegedly done prior to collection as there was a leak from it and it looked new...

[Maccmike]

A bit of whine is ok. Many cars do it.
But yeah as previously mentioned check your fluid level.

[Bashy]

Originally Posted by Maccmike

A bit of whine is ok. Many cars do it.
But yeah as previously mentioned check your fluid level.

Its the fluid, its bloody empty, theres a tiny smidging right on the tip of the dipstick ti bet they forgot to fill it back up when the did the pump, either that or they didnt fix it and it leak all out but i dont see any evidence of that, unbelievable, thanks guys

[The Landshark]

Make sure its filled with pentosin chf(green) and not atf (red).
Mine had atf in it when I got it and the pump was weeping and making a whining noise.
I drained it and refilled with pentosin and it's been fine since

[Bashy]

Originally Posted by The Landshark

Make sure its filled with pentosin chf(green) and not atf (red).
Mine had atf in it when I got it and the pump was weeping and making a whining noise.
I drained it and refilled with pentosin and it's been fine since

Good to know, thank you, are all single p/s fluid green? i have seen p/s + atf in one bottle, how do you know if its green?

[Maccmike]

Go and buy CHF11S.
https://www.halfords.com/motoring/engine-oils-fluids/gearbox-oil/halfords-central-hydraulic-fluid-chf-1l?istCompanyId=b8708c57-7a02-4cf6-b2c0-dc36b54a327e&istFeedId=367c5610-f937-4c81-8609-f84582324cd6&istItemId=rttla&istBid=t&_$ja=tsid:94 971|cid:865695751|agid:43902126655|tid:aud-297219198129la-371621040436|crid:202397318376|nw:g|rnd:8321131028 845555768|dvc:c|adp:1o2|mt:|loc:1006904&gclid=Cj0K CQiAxrbwBRCoARIsABEc9sgUWD0yVPMWbo_3qB6hAICxaqzr5-rFEd32Xvw7oH3yJ-ixWKHn6i4aAnRdEALw_wcB

[Georgeandkira]

Another brand is Pentosin CHF-11S. It's from Germany, fully synthetic Central Hydraulic Fluid. It's pale green. The can is green too!

BONUS SUGGESTION: Get a strong magnet and hang it (via copper wire) in the reservoir. You'll be amazed how much fuzz (metal) it collects.

[Bashy]

I had already bought and added some green stuff from my local car parts place, i specifically asked for the type for mine, he took my reg then went out back and got it, the noise hasnt been back so thats a start