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Old 10-14-2005, 15:01   #1 (permalink)
cgates30@yahoo.com
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vacuum pump in braking system makes noise when engine is cold

I have a '98 V70 GLT which started making a howling/fan noise when the
car is started after sitting a while. It doesn't seem to be related to
the engine RPM and it shuts off after 15-45 seconds. I called the
dealer and they said it is a vacuum pump in the braking system which
pressurizes the system and that the sounds is indicative of wear but
otherwise it still operates. They told me not to worry about it until
it actually goes out, and when it does it will cost about $475 to
replace.

I'm getting ready to sell the car and want to repair it before I put it
up for sale, but I don't want to shell out nearly $500 if I can have it
done or do it myself for a lot less. Is anyone familiar with this
problem? Is it something that another shop could do? Is it something a
mechanically inclined person could do themself (capable of doing timing
belts, recharge AC, fuel & air filters, spark plugs, cooling system
flushes, etc.) or is it too complex/need special equipment?

Oh, does anyone know the actual name of the pump or if there are any
web resources on it?

Many thanks!

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Old 10-14-2005, 18:01   #2 (permalink)
Glenn Klein
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Re: vacuum pump in braking system makes noise when engine is cold

cgates30@yahoo.com wrote:
> I have a '98 V70 GLT which started making a howling/fan noise when the
> car is started after sitting a while. It doesn't seem to be related to
> the engine RPM and it shuts off after 15-45 seconds. I called the
> dealer and they said it is a vacuum pump in the braking system which
> pressurizes the system and that the sounds is indicative of wear but
> otherwise it still operates. They told me not to worry about it until
> it actually goes out, and when it does it will cost about $475 to
> replace.
>
> I'm getting ready to sell the car and want to repair it before I put it
> up for sale, but I don't want to shell out nearly $500 if I can have it
> done or do it myself for a lot less. Is anyone familiar with this
> problem? Is it something that another shop could do? Is it something a
> mechanically inclined person could do themself (capable of doing timing
> belts, recharge AC, fuel & air filters, spark plugs, cooling system
> flushes, etc.) or is it too complex/need special equipment?
>
> Oh, does anyone know the actual name of the pump or if there are any
> web resources on it?
>
> Many thanks!
>

What you are hearing is the Air Pump which is for the fuel system & yes
it is going bad & yes you can have a qualified repair shop perform the
repair instead of the dealer just make sure that the pump & the check
valve is replaced @ the same time
Glenn

--
"*-344-*Never Forgotten"
Is for the New York City Firemen who lost their lives on September 11,2001.
The official count is 343, but there was also a volunteer who lost his life
aiding in the initial rescue efforts. And I will never forget them as
long as I live,
nor should any American.
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