V70: General - A/C noise - Page 2

cheshired5 · May 16th, 2019, 15:24

Quote:

Originally Posted by staaf

Alternator has new bearings, slip ring, regulator and brushes.

Does it have a new clutch pulley?
Has the alternator pulley been tested?

staaf · May 16th, 2019, 15:52

I guess you mean the clutch pulley from the compressor? Yes, it came with a new one.
The alternator pulley is also new (ina) and is tested.

Thanks for all the people who share their thoughts.

cheshired5 · May 16th, 2019, 16:07

Quote:

Originally Posted by staaf

I guess you mean the clutch pulley from the compressor? Yes, it came with a new one.
The alternator pulley is also new (ina) and is tested.

Thanks for all the people who share their thoughts.

No I meant the clutch pulley on the alternator.
If a non clutch pulley has been fitted to the alternator, it will stress the belt and other pulleys and create noise.

The exact part number of the pulley fitted to the alternator would be useful to confirm.

staaf · May 16th, 2019, 16:52

The pulley on the alternator is a clutch pulley (INA), it's a new one, and is tested. (using screw-driver to turn the fan in one direction).

Part number of the pulley INA 535 0121 10

Sahodgson · May 16th, 2019, 21:31

Have you looked at belt alignment? There will be a change in belt load with a/c on that might exaggerate any belt misalignment.... try spraying belt with some silicone spray before driving and see if noise disappears.

staaf · May 17th, 2019, 18:42

I haven't checked the alignment using a tool, on the first sight everyhing seems ok. Is it possible that the alignment isn't right? Is there room for misallignment? The alternator can only be possitioned in one way, the same for the powersteeringpump and the compressor. Same for the driveshaft pulley.

Model flyer · May 19th, 2019, 14:33

You say you had the condenser repaired and the noise started . It sounds like you may have introduced some debris into the AC system . This can cause the noise you have . Try getting an Air con specialist to flush the system . speak to a few AC specialist for an opinion and you may find one that has experienced the same problem It might work and worth a try as that noise would drive me crazy . good luck and let us know hat you find .

staaf · May 19th, 2019, 19:17

When I bought the car, the ac didn't work. The condensor appeared to have a leak so the system was empty. So i have no idea what sound the ac made before the repair.
I can't believe there is debris in the system, in the oil there was no debris, is was pure oil.
Problem here in Belgium is that every local garage calls himself an ac specialist. In reality they have a fill station that vacuums the system and refill it, and thats it.

It's very difficult to find the reason of this problem, Is it a problem of the ac system? Is it a problem of the power steering pump that is amplified when the ac is on, is it a resonation? I really don't know.

The car has been diagnosed by the dealer, an a Volvo specialist, both have no idea what's the problem.

barrybritcher · May 25th, 2019, 00:21

take the accessory belt off and run the engine for 1 minute. sounds like belt rub

kenny · May 27th, 2019, 20:00

It is unlikely to be belt rub as the belt runs with the air on on or off and the noise only there when the air con is switched on.

May 16th, 2019, 16:52	#14
staaf New Member Last Online: Apr 14th, 2024 21:02 Join Date: Feb 2014 Location: dendermonde	The pulley on the alternator is a clutch pulley (INA), it's a new one, and is tested. (using screw-driver to turn the fan in one direction). Part number of the pulley INA 535 0121 10 Last edited by staaf; May 16th, 2019 at 16:55.

May 19th, 2019, 14:33	#17
Model flyer Master Member Last Online: Dec 15th, 2023 18:46 Join Date: Jan 2006 Location: Kent,pothole capital of UK.	You say you had the condenser repaired and the noise started . It sounds like you may have introduced some debris into the AC system . This can cause the noise you have . Try getting an Air con specialist to flush the system . speak to a few AC specialist for an opinion and you may find one that has experienced the same problem It might work and worth a try as that noise would drive me crazy . good luck and let us know hat you find . __________________ The secret of flight is to aim at the ground and miss ! Previous Volvos 740 GLE . V40 CD ,V70 2.4 SE LPT.V70 D5 P2. V70 D5 Se Lux P3. Current Jaguar XF Sportbrake but still like Volvos

May 25th, 2019, 00:21	#19
barrybritcher Flaccid Member Last Online: Yesterday 16:09 Join Date: Nov 2016 Location: Norwich	take the accessory belt off and run the engine for 1 minute. sounds like belt rub __________________ 2001 Volvo S60 T5 SE 2.3 Geartronic (Scrapped) 2007 Volvo S60 T5 SE 2.4 Geartronic (Sold) 2008 Volvo V70 D5 SE Sport Geartronic (Current)

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May 16th, 2019, 15:52	#12
staaf New Member Last Online: Apr 14th, 2024 21:02 Join Date: Feb 2014 Location: dendermonde	I guess you mean the clutch pulley from the compressor? Yes, it came with a new one. The alternator pulley is also new (ina) and is tested. Thanks for all the people who share their thoughts.

May 16th, 2019, 21:31	#15
Sahodgson Yoorkshireman Last Online: Feb 9th, 2021 22:14 Join Date: Mar 2016 Location: Beverley	Have you looked at belt alignment? There will be a change in belt load with a/c on that might exaggerate any belt misalignment.... try spraying belt with some silicone spray before driving and see if noise disappears.

May 17th, 2019, 18:42	#16
staaf New Member Last Online: Apr 14th, 2024 21:02 Join Date: Feb 2014 Location: dendermonde	I haven't checked the alignment using a tool, on the first sight everyhing seems ok. Is it possible that the alignment isn't right? Is there room for misallignment? The alternator can only be possitioned in one way, the same for the powersteeringpump and the compressor. Same for the driveshaft pulley.

May 19th, 2019, 19:17	#18
staaf New Member Last Online: Apr 14th, 2024 21:02 Join Date: Feb 2014 Location: dendermonde	When I bought the car, the ac didn't work. The condensor appeared to have a leak so the system was empty. So i have no idea what sound the ac made before the repair. I can't believe there is debris in the system, in the oil there was no debris, is was pure oil. Problem here in Belgium is that every local garage calls himself an ac specialist. In reality they have a fill station that vacuums the system and refill it, and thats it. It's very difficult to find the reason of this problem, Is it a problem of the ac system? Is it a problem of the power steering pump that is amplified when the ac is on, is it a resonation? I really don't know. The car has been diagnosed by the dealer, an a Volvo specialist, both have no idea what's the problem.

May 27th, 2019, 20:00	#20
kenny Master Member Last Online: Dec 16th, 2020 20:33 Join Date: May 2009 Location: kirknewton	It is unlikely to be belt rub as the belt runs with the air on on or off and the noise only there when the air con is switched on.

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