Hi, I have a 2000 Saturn SL2 I recently bought used. I am having a brake issue. The car most likely sat around for a long time before I bought it. The brakes were serviced the week before I bought it, new front pads and rotors. I drive about 25 miles to and from work. In the morning the brakes work fine. In the afternoon on hot days there is a problem. The brake pedal gets firm and both front brakes feel like they are dragging/engaged when my foot is off the pedal. Both front rims are getting hot to the touch at the end of my ride, and I noticed that when I coast down hill I am slowing down. The back rims do not get hot.
I have replaced both front brake lines, both front brake calipers and flushed the master cylinder/front brake lines with new fluid. The problem has not changed. I am getting (what feels like) a good vacuum at the brake booster and the brake booster check valve is working properly. When I disconnect the vacuum line from the brake booster and plug it, I get a similar feeling firm brake pedal but the front brakes are releasing (note: I need to test this more on a hot afternoon).
I have a second Saturn SL2 and I am thinking of swapping the brake boosters to see if there is a difference. Do you think that this is a good idea?
I don't want to replace more parts without determining the source of the problem. How do I proceed with this?
Thanks for the help! Bill
Wednesday, August 8th, 2012 AT 1:49 PM