Re: 2000 mercury sable brake problem
If you replaced the rear proportioning valve and never bled the brakes , it's lucky you got a pedal at all . If you have a cyl . with a knackered bleeder , you can bleed through the pipe as a temp measure .But until you rectify it by replacing cyl. you will still have air in system .If it's pulling to left , check the front right calliper / pads are working o.k .Also try bleeding master cyl. before doing other brakes . Also check front flex hoses , can collapse inside . Never , never a good idea to fit brake parts from a salvage yard .