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Re: Brake Problems in Cold S40-V40 00

posted by  someone claiming to be abe crombie on  Wed Dec 27 13:01 CST 2000 [RELATED]

As both the other responses mentioned, there is an electric vac pump that is switched on when the vacuum level in intake is inadequate.

You can test for it working by depressing the brake pedal few times with key off and then switch on the ignition. The pump is very audible and it will run for 1-2 seconds when key is first turned on. If you don't hear the rumble then the pump is not functioning.





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