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proportioning valve replacement

Spartanzz

New member
Ok a day or two ago i got in my car (98 GTP) and the brakes seemed VERY numb and it was hard to stop the car. So i checked the brake fluid and the thing was almost dry. I filled it up and yesterday i popped the wheels off and found that the proportioning valve is leaking. And, to top it off it looks like the previous owner just tried to seal it up with silicone...really people lol...so im gunna order the part but my question is once i replace the valve with a new one do i have to bleed all four sides or do i need to just bleed the side of with the valve i replaced? or the third option should i bleed all four just to be safe? Also, i herd from one guy that our cars have a "self bleeding system" is this true???
 


id feel safe just bleeding all 4 rather than having mushy brakes. When I did all of my calipers I had to bleed them all 3-4 times to get all the air out of them. I know on some cars there is a bleeder on the abs module but I don't think there is on these guys.
 
yeah i pretty much expect to have to be there for a while at each wheel while my fiance sits and pumps the breaks for me while i tighten the screw and watch lol
 
yeah starting farthest from the master to the closest ;) just ordered the valve i need so gunna go pick up about 2 32oz bottles and flush the system just to be sure its all new if im lucky the part will get here tomorrow cuz im off work
 


id feel safe just bleeding all 4 rather than having mushy brakes. When I did all of my calipers I had to bleed them all 3-4 times to get all the air out of them. I know on some cars there is a bleeder on the abs module but I don't think there is on these guys.

my regal has the 2 bleeders on the abs, when i first got the car the brakes were all mush, so i started to bleed them all, and then found the abs bleeders, and wound up bleeding them every other day for 2 weeks till all the air was out, nice foamy fluid kept coming out, i finally got all the air out, and the brakes haven't been touched since. it was odd because i would bleed the abs till solid fluid came out and 2 days later i had the mushy pedal again, bleed and more air came out, like i said this went on for 2 weeks, then i guess it all the air came out.
 
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