Brakes 'sticking' from stop

[caveman017]

This just started happening a few weeks ago. When at a complete stop, i can release my foot off of the brake pedal and the car just sits there. Before, it would slowly creep forward.

When accelerating from a stop, it seems like it struggles for the first second (like theres breaks being applied) then its just fine.

No problems at highway speed.

When I stop, I smell a slight burning smell near the front end of the car

[uuuuu]

You may have a stuck caliper and /or very warped rotor. Possibly get the caliper rebuilt or replaced. If your rotor is warped, you will notice it during normal braking.

[Mike Gerber]

Check and lube the caliper slide pins on the front brakes. They may be sticking and now allowing the caliper to release the brake pads from putting pressure on the brake rotor(s).

Mike

[93celicaconv]

Originally Posted by Mike Gerber

Check and lube the caliper slide pins on the front brakes. They may be sticking and now allowing the caliper to release the brake pads from putting pressure on the brake rotor(s).

Mike

Slide pins are the most likely problem. But, pistons could be stuck in the cylinders too, and won't go back properly. Either could be the problem.

[fenixus]

+1 on sticky sliding pins or piston. you can easily tell the difference once you pull the brake pads out and compare them (inner pad thickness vs outer pad thickness).
as far as i remember sticking piston (is PITA to rebuild) will cause thinner outer pad.
sticking sliding pins will cause thinner inner pad, they are very easy to remove and re-grease with permatex disc brake lube, you may need to replace (or remove that) the rubber o-ring on top pin.

don't quote me on pads thickness theory as i may got it the other way around. may look it up if you want.

[93celicaconv]

The pad wear theory is based upon the caliper design.

However, on all calipers, if the pins are free to slide, but the pistons are sticking, the wear on the pads are uniform. So a brake that is binding one wheel that has uniform pad wear typically will have a sticky piston.

On most Toyotas, the piston is in the sliding part of the caliper. So if the pins are sticky, the caliper tends to bind, so the pad on the side with the piston tends to have less wear than the pad opposite the piston. Often, if the pins are at fault and the brake bind is significant, it will heat up one side of the disc, but not the other, which increases the chances of developing a warped rotor as well.