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dash fan causing vibration on higher settings Topic is solved

Everything on the Volvo S80. Sometimes called an "executive car", the S80 was Volvo's top-of-the-line passenger car. P2 platform.
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June
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Year and Model: 2004 S80 T6,1991 740
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dash fan causing vibration on higher settings

Post by June »

Recently I have noticed a strange vibration in the steering wheel when I set the air conditioning blower above half way. Has anyone had this problem and how did you stop the vibration? My car is a 2004 S80 T6 with 119,xxx miles. Thank you, June
My Volvo cars owned
1989 740 GLT ordered
1994 850 4door standard shift ordered
1996 960 ordered
1998 S90 ordered totalled after 3 weeks
1998 V70 GT dealer stock car
2002 S80 T6 ordered totalled
2004 S80 T6 dealer stock car and current car owned

donf
Posts: 13
Joined: 27 April 2009
Year and Model: '89 s70, '05 S80
Location: Texas

Post by donf »

Sounds like your vent fan could be the cause to me. It's behind the glove box - there are several excellent videos online to help you.
You really need the flexible screw driver (or a flexible drill shaft - a little cheaper) to get the front screw. Do not break the tab like at least one person suggests.
To get it out should take less than 20 minutes. Then check for free play, maybe even rig up something to run it while it is remove- just make sure the housing is held very securely before applying 12 volts to the motor, I used a vise.

As I recall the motors run between 100 and 300 something. Personally, I would go with OEM because I believe they last longer. Don't forget to replace the cabin filter while you are thhere.

majorcode
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Year and Model: 1999
Location: Riyadh

Post by majorcode »

June,

99% you Air con Fan. I had the same problem of dash vibration, but I just took the fan out and cleaned. And problem solved.

I am pro DIY guy and I must admit it took me 40 mins to take out and 30 min to get it fit back. Plus job is seriously not easy, so be careful.

Good Luck!

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June
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Year and Model: 2004 S80 T6,1991 740
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Post by June »

majorcode wrote:June,

99% you Air con Fan. I had the same problem of dash vibration, but I just took the fan out and cleaned. And problem solved.

I am pro DIY guy and I must admit it took me 40 mins to take out and 30 min to get it fit back. Plus job is seriously not easy, so be careful.

Good Luck!
Did you clean the blades or was it the motor?
My Volvo cars owned
1989 740 GLT ordered
1994 850 4door standard shift ordered
1996 960 ordered
1998 S90 ordered totalled after 3 weeks
1998 V70 GT dealer stock car
2002 S80 T6 ordered totalled
2004 S80 T6 dealer stock car and current car owned

chrism
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Year and Model: S80 / 2005
Location: Atlanta, GA
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Post by chrism »

My son's Saab got to where it vibrated horribly when set at the higher speeds. Turned out a mouse had built a nest in the fan causing it to be way out of balance.

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oragex
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Post by oragex »

On S60 you can access the fan blades by lifting the large plastic trim at the bottom of the windshield - no need to remove the wipers. Keep a hand under each clip and depress the center pin. Easier than removing the blower.

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June
Posts: 2275
Joined: 4 May 2016
Year and Model: 2004 S80 T6,1991 740
Location: Arkansas
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Post by June »

I took her in to Osteen Volvo (my service center) for a oil change today and asked them to find out what was wrong with the fan causing the vibration. I tried to figure out how to remove the plastic under the windshield to reach into the fan to see if something had been caught in the fan and couldn't figure out how it came apart. Calvin my mechanic removed the panel and pulled out a chunk of fabric insulation. Believe it or not I was only charged about $20.00 and that is dealership price. It must be really easy to reach into the fan. I had terrible images floating in my head of removing the fan after looking at the how to link.

Thank you everyone for all the helpful suggestions and I feel a little dumb that I couldn't figure out how to get the panel off. Twenty bucks means five or ten minutes at the cost of labor these days so it must be really easy!
My Volvo cars owned
1989 740 GLT ordered
1994 850 4door standard shift ordered
1996 960 ordered
1998 S90 ordered totalled after 3 weeks
1998 V70 GT dealer stock car
2002 S80 T6 ordered totalled
2004 S80 T6 dealer stock car and current car owned

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