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Vacuum Pump

Help, Advice, Owners' Discussion and DIY Tutorials devoted to the second generation C70, S40 and V50 Volvos -- awkwardly model year 2004 ½ onwards -- plus where to go for advice and discussion on Volvo's sporty C30 Coupe powered by Volvo's ubiquitous inline 5-cylinder power plant.
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SAM2
Posts: 4
Joined: 22 August 2011
Year and Model: 2007 V50
Location: Michigan

Vacuum Pump

Post by SAM2 »

My 2007 Volvo V50 2.4i has what I believe is an intermittent problem with the electric vacuum pump. After my commute I can hear the vacuum pump whine when the engine is off, this continues for a couple of minutes and then shuts off. I have noticed this intermittently over the past several months, when it does occur it is very loud and the electric motor is hot to the touch.
Anyone have experience with this? I've seen other volvos with a similar issue that indicated a problem with the vacuum sensor. I've looked at the hoses connected to the pump but I do not see anything obvious connected to them that looks like a sensor.

Thanks for your help,
Scott
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MyVolvoPartsOnline
Posts: 32
Joined: 8 September 2011
Year and Model: S70 1998
Location: Sacramento
Been thanked: 1 time

Post by MyVolvoPartsOnline »

It sounds like one of the switches that goes to your booster might be bad, and the pump is working overtime trying to compensate. Make sure the check valves to the booster are all functioning normally.
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