P_BA_XR6 Member 271 Member For: 16y 3m 26d Gender: Male Location: Castle Hill Posted 17/12/12 01:50 PM Share Posted 17/12/12 01:50 PM I went for cruise while ago I found that my brakes wernt working properly. I found that the PVC valve had shattered. So allowing boost to get to the brake booster. So I replaced it but feels like sometimes that when I've just boosted then back off for the corner feels like something is holding the pedal up so I apply more pressure and it pushes down probably another half and inch, then it starts to set the abs off and try to stop the car. I have put 4 piston brembos on the front and ford territory rear brakes. I've tried so far -new PVC valve-About 4 years ago my abs pump crapped it self and made it have no abs at allAs stupied as is sounds is there a difference between the na xr6 and the f6 master cylinder. Or is my master cylinder playing games or my abs pump again. Link to comment Share on other sites More sharing options...
discostig Manual mode ________________________ All day, erryday Donating Members 13,798 Member For: 16y 10m 3d Gender: Male Location: Probably above atmospheric pressure Posted 17/12/12 02:14 PM Share Posted 17/12/12 02:14 PM Brake issues = get to a specialist! Gotta be able to stop with confidence. If you can keep it garaged while you get advice on here all good though. Link to comment Share on other sites More sharing options...
F1PERFORMANCE Donating Members 104 Member For: 15y 6m 14d Gender: Male Location: VIC Posted 17/12/12 02:28 PM Share Posted 17/12/12 02:28 PM the pcv valve has nothing to do with your brakes unless you mean the 1 way valve on the booster. From your description it seems like you have a faulty 1 way valve or a hole in the booster diaphragm. 1 Link to comment Share on other sites More sharing options...
P_BA_XR6 Member 271 Member For: 16y 3m 26d Gender: Male Location: Castle Hill Posted 17/12/12 03:33 PM Author Share Posted 17/12/12 03:33 PM Yea I ment the 1 way valve sorry , it was broken found peice missing ( little hole size of 5mm drill bit) in it Link to comment Share on other sites More sharing options...
KeddyXR6T Donating Members 320 Member For: 15y 6m 20d Gender: Male Location: Melbourne Posted 17/12/12 05:39 PM Share Posted 17/12/12 05:39 PM Replace the check valve with one from ford parts the aftermarket ones are generally are useless, have you had the brake warning (( ! )) light up on your dash have you bled your brakes lately ?? If so did you flush your lines All that said booster diaphragm is the most likely and as per usual pretty costly Link to comment Share on other sites More sharing options...
P_BA_XR6 Member 271 Member For: 16y 3m 26d Gender: Male Location: Castle Hill Posted 17/12/12 10:23 PM Author Share Posted 17/12/12 10:23 PM Mmm hoping not Ill look on the net see if there is a brake booster test I can do, I have genuine one way valve and forgot to mention brand new braided lines on all four, I went little crazy with braided lines including the clutch line lol. But anyways hopefully it's not to major but well we will see. I believe might be brake booster aswell due to I found the one way valve missing a little chunk out of it. It was rubbish plastic centre, so I made sure when ford handed me new one was better so its metal one now Link to comment Share on other sites More sharing options...
MX Dave Donating Members 545 Member For: 13y 5m 22d Gender: Male Posted 17/12/12 10:55 PM Share Posted 17/12/12 10:55 PM To test dodgy brake boosters I normally clamp off all brake lines at te calipers then with the car off see what the brakes are like first pump. If the pedal is good then it's a fault elsewhere if the pedal is sh*t then it's the booster.But a lot of other variables come into play though with newer model cars, abs etc etc Link to comment Share on other sites More sharing options...
P_BA_XR6 Member 271 Member For: 16y 3m 26d Gender: Male Location: Castle Hill Posted 17/12/12 11:05 PM Author Share Posted 17/12/12 11:05 PM Ill give it a shot thanks mx Dave Link to comment Share on other sites More sharing options...
KeddyXR6T Donating Members 320 Member For: 15y 6m 20d Gender: Male Location: Melbourne Posted 18/12/12 05:00 PM Share Posted 18/12/12 05:00 PM (edited) When you have a BA nothing's major lol blown 6 boxes second motor bout 12 driveshafts and the rest Edited 18/12/12 05:02 PM by KeddyXR6T 1 Link to comment Share on other sites More sharing options...
P_BA_XR6 Member 271 Member For: 16y 3m 26d Gender: Male Location: Castle Hill Posted 27/12/12 08:59 PM Author Share Posted 27/12/12 08:59 PM PVC hose started to come off also doesn't help noticed got race pads which were sapost to be heavy duty so I have to get them hot before they start to work. Seem fine since I mucked around with few things. Link to comment Share on other sites More sharing options...
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