| Aux Vacuum Pump comes on (brake vacuum) [message #297097] |
Thu, 10 March 2016 15:34  |
George B.
Messages: 213
Registered: February 2012
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I have a GM aux vacuum pump installed and recently it has started running a few times when I press on the brake pedal. It is usually when I first start up and am backing up or maneuvering around my parking area. Never has done that before. When I am out on the road it does not come one. I checked my vacuum hoses to the master cylinder and the one running to the rear of the engine and hooked up with others at the cruse control. All seemed OK. Brakes seem to work OK while driving around town. Just not sure if the, I suppose, low vacuum at idle causing the pump to run is an indication of something going wrong. Checked brake fluid level and is OK. Any ideas?
George Butts
Las Vegas Nevada
73 "Custom 26' Q" & 76 23' Birchaven
71 Honda 600 Coupe & 01 Tracker Toads
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