brake issue again!!!!!!

[Anonymous]

so I figured changing the rubber hoses and ABS pump would execute the problem the car drove fine a couple days after then the brakes started grabbing automatically again it seems like they tend to act up when it gets hot outside while driving , I've disconnected the the red and black wire on the ABS pump but that haven't worked so I'm thinking about unplugging that big harness what are some of your thoughts???

 

[luigisho]

Spitballing.. is it possible the abs pump is faulty? Is it possible there is still air in the abs system? Do you feel abs kicking in when the brakes grab or drag? Is it possible that the rear prop valve gets gummed up and throws everything out of whack? I would think that maybe this would be evident when bleeding rear brakes but not 100%...

Less common issues cropping up with age on these cars.

 

[Anonymous]

Spitballing.. is it possible the abs pump is faulty? Is it possible there is still air in the abs system? Do you feel abs kicking in when the brakes grab or drag? Is it possible that the rear prop valve gets gummed up and throws everything out of whack? I would think that maybe this would be evident when bleeding rear brakes but not 100%...

Less common issues cropping up with age on these cars.

It kinda feels like I'm riding the brakes and giving it gas at the same time you can definitely feel the brakes dragging but it also tends to release too but you can tell cause the pedal gets soft again but when it's hard that's when you know they dragging like it's got mind of its own now when you talk about the rear prop valve are you referring to the junction block that sits in the back of the car ?

 

[luigisho]

Yeah. Just looking for air or flow restriction. I forget the last thread, how are the calipers on all four corners?

 

[Anonymous]

Yeah. Just looking for air or flow restriction. I forget the last thread, how are the calipers on all four corners?

the pistons seem to release fine they don't get stuck or anything and I cleaned and lubed the slide pins but I think the one rear caliper on the driver side isn't getting no fluid

 

[luigisho]

If they are old they would be suspect to me. You have to verify if there is fluid flow. Is the parking brake possibly not fully releasing?

For reference, if you need to replace the bias valve I would try shosource for a good used one as the oem new is over $200.

 

[zoomlater]

So with your failing emergency brake post, have you figured out which wheel/brake set up is not releasing. First time out in the morning, drive a short distance and get out and check which wheel is getting hot. Either that, or jack up the car and see which wheel is dragging.

 

[RAYJAY]

the pistons seem to release fine they don't get stuck or anything and I cleaned and lubed the slide pins but I think the one rear caliper on the driver side isn't getting no fluid

check the bias valve in the rear

 

[zak]

Did you change all four rubber hoses?

 

[DJSHO91]

I recently had a similar issue. It got progressively worse and it eventually felt like it had lost all the brake fluid. I was surprised to find that the seal to the brake booster had failed and the booster was full of fluid!