S80 MKII V8 2006 - Blower and rear parking sensor issue

Scalix · Aug 24th, 2018, 13:37

Good afternoon All,

It is my first message here but not my first Volvo lol.

I have a S80 V8 AWD 2006 MKII model and I experience two issue :

The rear parking sensor stopping to work properly. In fact, I can hear a quiet beep beep sound through the rear speaker but not far to be impossible to hear. The front sensor beep beep sound is good. I am wondering if it is not the amplifier the problem ? The sound in the car is not really good for a premium dolby digital. Any idea of where the problem can come from ? I had something similar on my C30 before and it was the amplifier and it cost a fortune... In adition if it is the amplifier I read somewhere you can't change it by yourself because the ICM read is serial number and will not communicat if it is not the right one.

My second problem is a blower fan noise. I looked on internet and people said that can be the fan motor itself. The motor was changed by the previous owner and I don't think this is the problem. When the engine is stop, I can't hear any noise in any fan speeds. However when the engine is running the blower start to make noise following the engine revs. It looks like a current return from somewhere. Do you have any idea ? The alternator was also changed by the previous owner recently. The battery is not the right size (too small). Can it be the battery ?

Thanks for your help guys

Waynedance · Aug 24th, 2018, 14:02

Does the fan noise stop if you switch off the aircon?

Scalix · Aug 24th, 2018, 15:05

I will try that this evning and let you know

Scalix · Aug 24th, 2018, 20:33

Hey,

So i tried tonight and i have the noise from the blower when the AC is on but i haven't the noise when the AC is off. Any idea ?

Waynedance · Aug 24th, 2018, 21:43

Yes I know your problem, firstly get an air con regass and see if noise goes, low gas can cause the noise.

Mine did not so replaced the valve in the bulkhead. It's located under the scuttle panel where the wipers are fitted. I forget the actual name. Changed mine and cured the noise that changed when the aircon was on and accelerated.

Edit, it a called expansion valve. Give it a Google, whine from aircon Volvo.

Scalix · Aug 25th, 2018, 20:53

I looked this afternoon and I have 25 psi on the low pressure site. So not far to be low level. Do you think I need to go up to 40 psi ?

Waynedance · Aug 25th, 2018, 21:41

No idea, best to have it on a proper machine that will fill to correct level.

The replacement valve i got from Volvo was a little different so may have been modded.

Scalix · Aug 26th, 2018, 09:49

I see. Did you change it by yourself or by your volvo garage ? Do you have an idea of price ? Thanks

Waynedance · Aug 26th, 2018, 10:39

Changed myself but you will need a garge to remove the gas.

Price was around £90 with seals etc.

Scalix · Aug 31st, 2018, 07:00

Morning,

Someone has an idea about the rear parking sensor ?

Thanks

Aug 24th, 2018, 13:37	#1
Scalix Junior Member Last Online: Mar 29th, 2020 11:24 Join Date: Aug 2018 Location: Shrophire	S80 MKII V8 2006 - Blower and rear parking sensor issue Good afternoon All, It is my first message here but not my first Volvo lol. I have a S80 V8 AWD 2006 MKII model and I experience two issue : The rear parking sensor stopping to work properly. In fact, I can hear a quiet beep beep sound through the rear speaker but not far to be impossible to hear. The front sensor beep beep sound is good. I am wondering if it is not the amplifier the problem ? The sound in the car is not really good for a premium dolby digital. Any idea of where the problem can come from ? I had something similar on my C30 before and it was the amplifier and it cost a fortune... In adition if it is the amplifier I read somewhere you can't change it by yourself because the ICM read is serial number and will not communicat if it is not the right one. My second problem is a blower fan noise. I looked on internet and people said that can be the fan motor itself. The motor was changed by the previous owner and I don't think this is the problem. When the engine is stop, I can't hear any noise in any fan speeds. However when the engine is running the blower start to make noise following the engine revs. It looks like a current return from somewhere. Do you have any idea ? The alternator was also changed by the previous owner recently. The battery is not the right size (too small). Can it be the battery ? Thanks for your help guys

Aug 24th, 2018, 14:02	#2
Waynedance Senior Member Last Online: Mar 15th, 2021 22:31 Join Date: Jun 2017 Location: Nuneaton	Does the fan noise stop if you switch off the aircon? __________________ S80 P3 SE LUX D5 Auto

Aug 24th, 2018, 21:43	#5
Waynedance Senior Member Last Online: Mar 15th, 2021 22:31 Join Date: Jun 2017 Location: Nuneaton	Yes I know your problem, firstly get an air con regass and see if noise goes, low gas can cause the noise. Mine did not so replaced the valve in the bulkhead. It's located under the scuttle panel where the wipers are fitted. I forget the actual name. Changed mine and cured the noise that changed when the aircon was on and accelerated. Edit, it a called expansion valve. Give it a Google, whine from aircon Volvo. __________________ S80 P3 SE LUX D5 Auto Last edited by Waynedance; Aug 24th, 2018 at 21:46.

Aug 25th, 2018, 21:41	#7
Waynedance Senior Member Last Online: Mar 15th, 2021 22:31 Join Date: Jun 2017 Location: Nuneaton	No idea, best to have it on a proper machine that will fill to correct level. The replacement valve i got from Volvo was a little different so may have been modded. __________________ S80 P3 SE LUX D5 Auto

Aug 26th, 2018, 10:39	#9
Waynedance Senior Member Last Online: Mar 15th, 2021 22:31 Join Date: Jun 2017 Location: Nuneaton	Changed myself but you will need a garge to remove the gas. Price was around £90 with seals etc. __________________ S80 P3 SE LUX D5 Auto

Aug 24th, 2018, 15:05	#3
Scalix Junior Member Last Online: Mar 29th, 2020 11:24 Join Date: Aug 2018 Location: Shrophire	I will try that this evning and let you know

Aug 24th, 2018, 20:33	#4
Scalix Junior Member Last Online: Mar 29th, 2020 11:24 Join Date: Aug 2018 Location: Shrophire	Hey, So i tried tonight and i have the noise from the blower when the AC is on but i haven't the noise when the AC is off. Any idea ?

Aug 25th, 2018, 20:53	#6
Scalix Junior Member Last Online: Mar 29th, 2020 11:24 Join Date: Aug 2018 Location: Shrophire	I looked this afternoon and I have 25 psi on the low pressure site. So not far to be low level. Do you think I need to go up to 40 psi ?

Aug 26th, 2018, 09:49	#8
Scalix Junior Member Last Online: Mar 29th, 2020 11:24 Join Date: Aug 2018 Location: Shrophire	I see. Did you change it by yourself or by your volvo garage ? Do you have an idea of price ? Thanks

Aug 31st, 2018, 07:00	#10
Scalix Junior Member Last Online: Mar 29th, 2020 11:24 Join Date: Aug 2018 Location: Shrophire	Morning, Someone has an idea about the rear parking sensor ? Thanks

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