1999 Chevy Venture Loss of brake pedal pressure while engin

1999 CHEVROLET VENTURE
102,000 MILES • 6 CYL • FWD • AUTOMATIC
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PAULMABEE
  • MEMBER
  • 1 POST
the brakes loose pressure while running. When the engine is off the brakes load and function. Can the problem be Vacuum related?
Apr 11, 2009 at 4:05 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
If its not leaking anywhere and its running and you feel the pedal sinking I suggest you replace the master cylinder it has an internal leak
Apr 11, 2009 at 6:28 PM
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