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2003, XC 70 Vacuum Brake Switch Noise V70-XC70

posted by  afm on  Sat Oct 26 14:33 CST 2019
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last visit: Sun Oct 19 04:58 CST 2014
[RELATED]


The car has about 145K miles on it. The brakes seem to be functioning normally.
Often when I shut off the engine I hear a buzzing noise every 10 seconds or so coming from the vac. brake switch. If I un-plug the electrical connector it stops buzzing.

What is causing the valve to buzz after the ignition is shut off?
Thanks,
Art






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