sprin04 Posted July 12, 2016 Share Posted July 12, 2016 I have an 04 legacy, the front pass, wheel that gets hot- about 300 after about 15 min of driving. (the driver side is not hot) Sometimes this happens sometimes it doesnt. I have replaced the pads, the caliper and brake lines. yesterday I also had the wheel bearing replaced. any ideas??? the mechanic is thinking the abs might be malfunctioning. (the car doesnt pull at all, no sounds no pulsing) 1 Link to comment Share on other sites More sharing options...
rverdoold Posted July 13, 2016 Share Posted July 13, 2016 If the ABS is malfunctioning remove the ABS fuse, the system will stop working and the wheel should remain cool like the other. However I do think it is not the ABS and that your brake is still dragging on the rotor. When you replaced the caliper was it able to slide freely in the slide pins? Is the caliper able to move a bit when no pressure is on the brakes (is there some play)? (it could be that slide pins are stuck) Was the caliper new, and is the piston reseated (new seals and honed surface)? If all of above is YES, then oops... Somewhere in the line the backflow of brake oil is prevented leaving the brake stuck. It could be a faulty ABS actuator unit (the one on the strut mount with many brake lines on it). It possible is not your master brake cylinder as it only affects 1 wheel, unless the cross opposite wheel is affected to (drivers side back). Link to comment Share on other sites More sharing options...
heartless Posted July 13, 2016 Share Posted July 13, 2016 when you replaced the pads, were the old ones worn evenly and flat? or was one more worn than the other? or possibly worn at an angle? if worn unevenly/angled it would indicate the caliper is hanging up on the slider pins I have discovered that one of mine has a little bit of play on the pins allowing the caliper to twist slightly - indicating the pins & seals should be replaced Remove the pads, set the caliper back in place, and try sliding it back and forth on the slider pins, if it binds up or does not move easily, this could be the source of your heat issue 1 Link to comment Share on other sites More sharing options...
idosubaru Posted July 13, 2016 Share Posted July 13, 2016 ideally - the next time it's hot you jack that tire up and see if the wheel it tight to turn - like the brakes are clamping on it. do that a couple times to see if you can catch it sticking. have someone press and release the brake pedal while you're spinning (or trying to spin) the tire and make sure it clamps and releases in unison with how they're pressing the brake pedal. you're positive it's still getting hot after the wheel bearing replacement? did the mechanic say the old bearing looking damaged? what did the pads look like - warn evenly, look the same as the other side of the car...? 1 Link to comment Share on other sites More sharing options...
Numbchux Posted July 13, 2016 Share Posted July 13, 2016 (edited) I bet sticking caliper slide, or pad hardware. New parts are not all created equal. What pads were used? Many aftermarket pads are a bit too large, and have to be ground down a bit or they will bind in the bracket/clips. What caliper? Semi-loaded? New stainless steel hardware? Good grease on the pins? You would feel the ABS working. Edited July 13, 2016 by Numbchux Link to comment Share on other sites More sharing options...
1 Lucky Texan Posted July 13, 2016 Share Posted July 13, 2016 ABS releases pressure - won't apply it. might be time to think about hiring a new mechanic. 1 Link to comment Share on other sites More sharing options...
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