I have a Mazda MX-3 GS V6...it has 4 disc brakes. I went to change my brakes and notice that I coudl not bleed the pass. rear caliper, but the other three bled normal... so I took off the calliper to see if it was seized, but it was movable, and I even changed the piston boot and rings...so I started chasing the line unhoooking and trying to bleed at ever connection and no fluid...I followed the pass rear brake line to the proportioning valve, and thats where I stopped...could anyone explain how a dual proportion valve coudl malfunction if that is the case?
2007-02-07 18:04:18 · 3 answers · asked by e11evonllc 2 in Cars & Transportation ➔ Maintenance & Repairs
It seems odd, even unfortunate that the valve would be siezed on such a new auto, but nothing is perfect. Good thing you have the wherewithal to research this it could have been an expensive fix it at a shop. Good luck getting everything swapped out and bled. That can be a tight area to work in and if even one of the lines to the PValve won't come loose it can be a knuckle busting, frustrating job.
Good luck.....
2007-02-07 18:49:09 · answer #1 · answered by FAT CAT 4 · 0⤊ 0⤋
Yes they do go bad! It sounds like that is your problem. You can try bleeding the proportioning valve with a brake bleeding gun, making sure to open every valve then re-bleed the brake system this will eliminate the possibility of a air bubble in the proportioning valve. I have changed probably ten or twelve of these things in my ventures.
2016-05-24 05:48:20 · answer #2 · answered by Maria 4 · 0⤊ 0⤋
it's plugged up, replace it:)
2007-02-07 18:10:00 · answer #3 · answered by ClassicMustang 7 · 0⤊ 0⤋