Question about 2007 Volvo S40 2.4i Sedan
I had the same issue, reason Of the vacuum pump to work continuously is either a leak in the vacuum pipes btween the pump and master cylinder or "which was my case", the vacuum switch or sensor between the master cylinder and vacuum pipe is not functioning properly. Replaced and everything works fine.
Posted on Mar 29, 2015
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Posted on Jan 02, 2017
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