AlexA Posted August 25 Report Share Posted August 25 So issues all began with my wife parking on a steep street at a friends bridal shower. She calls saying her pedal is super stiff, after she arrived home i took it for a test drive and confirmed the stiff pedal that you had to stand on the get vehicle to stop. I consider myself pretty mechanical and after checking the obvious thing I determined that the master had more than likely failed. After replacing the master, then booster, replacing all brake fluid, bleeding each tire with a compressed air bleeder and purging the ABS module with a scan tool the brakes are now super soft pedaled and don’t work great unless you hit the brake pedal quickly like your stomping on them. Did i get a bad master or what am i forgetting? I have also tried the slamming on the brakes method to trigger the ABS and nothing has changed. Please help a guy out! Quote Link to comment Share on other sites More sharing options...
1004ron Posted August 25 Report Share Posted August 25 Check the vacuum line and its non-return/check valve is good. Let the engine idle for a few minutes to build vacuum in the booster then disconnect the hose at the booster and confirm there's an inrush of air. Quote Link to comment Share on other sites More sharing options...
AlexA Posted August 25 Author Report Share Posted August 25 (edited) 27 minutes ago, 1004ron said: Check the vacuum line and its non-return/check valve is good. Let the engine idle for a few minutes to build vacuum in the booster then disconnect the hose at the booster and confirm there's an inrush of air. Yes i have done this also. There is plenty of vacuum. No leaks anywhere, fluid or vacuum I have also replaced the check valve with a ford OEM valve Edited August 25 by 1004ron 1 Quote Link to comment Share on other sites More sharing options...
1004ron Posted August 25 Report Share Posted August 25 20 minutes ago, AlexA said: Yes i have done this also. There is plenty of vacuum. No leaks anywhere, fluid or vacuum I have also replaced the check valve with a ford OEM valve Anything else you haven't mentioned? Quote Link to comment Share on other sites More sharing options...
AlexA Posted August 25 Author Report Share Posted August 25 33 minutes ago, 1004ron said: Anything else you haven't mentioned? Not that i recall but I’ve been fighting it for a while now and feel like I’ve chased every possible common issue with no change Quote Link to comment Share on other sites More sharing options...
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