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2002 s80 humming/groaning noise

6787 Views 4 Replies 3 Participants Last post by  bob57

New to the forums and I'm trying to get some help with a problem my friend's car is having

It's a 2002 Volvo S80 T6 w/ 180k miles on it. From the moment it starts to move, there is an increasing drone/humming/ sound as if metal is being turned on a lathe or something metal is rubbing. It doesn't seem to be coming from the engine but is coming from the front of the car. My friend says that a shop told her it's the tires, but it's definitely NOT the tires. It's more of a mechanical noise. She has had the wheel bearings replaced and actually the sound has gotten a bit worse. Brake pads have been replaced recently as well.

I'm thinking it may be the CV axle or joint turning? I don't think they have ever been replaced. Is there a good way to check this? The shop also told her she needs new shocks/struts, but I don't think this is a related issue.

I have some good general car knowledge as my father was a mechanic for 30 years. The droning sound is loudest at about 30-40 mph and is constant while the car is in motion. At idle tapping the gas, the sound is not created. Thats why I don't think it's engine related. . unless it's the turbos? (This car has a turbo doesn't it?:confused:)

Anyway, please let me know if anybody has any ideas on what to look for. She doesn't have a bunch of ?$$ to spend and I'm trying to help her out.

BTW. . I just picked up an 09 Volvo C30 R-design and am loving it.

Thanks for the help
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I am a new member with a similar problem on my 2003 S80 (2.5L) not turbo. I just came from a mechanic that said that it was my front wheel bearings (Loudest between 30 - 35mph). Also mentioned boots leaking. I had new tires put on 11 months ago along with new brakes (rotors must be replaced with pads - I found out they are designed to wear at the same rate) for optimum braking - Costly way to replace brakes, though it is for safety.
You mentioned that the bearings had been replaced. I am curious what the cost was. I was quoted $1,000.00 for the front two wheels. They were out of stock so I can shop around a bit. Does this sound reasonable. My car has 85,000mi. on it. Seems a bit high to me.
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