Saturday 24 September 2011

After changing front brake pads, brakes are locked up.?

I have a 2003 Dodge Grand Caravan. My friend (who has done brakes plenty of times) helped me change the front brake pads. We tried pushing the cylinder all the way in (after we found the lock up), but when I turn the car on and shift into any gear it just sits there - if I gun it, the wheels jump like the brakes are held on tight and the car will move a little. Any help?
After changing front brake pads, brakes are locked up.?
Assuming the problem is hydraulic, try opening the bleed valves on the two front calipers. After a tablespoon or so of fluid has come out - enough to ensure any pent up pressure is relieved - see how the system behaves. You will want to jack up the wheel and test it that way rather than by putting it in gear, which will require you to step on the brakes to shift into gear. This step of bleeding is just to identify whether the problem is hydraulic or solid mechanical.
After changing front brake pads, brakes are locked up.?
Sounds like you may have gotten incorrect brake pads? How easy did the pistons push back in? Did you clean and lube the caliper contact surfaces? Is the E-Brake on? Are the pads installed correctly?
sounds like the pistons are scored and not releasing,,,

or somthing is not put back togather properly????



good luck,,,,,,,,,,,
Stating the obvious first. Did you have the emergency brakes on? Or did you do it safely and put chocks behind the rear wheels? Sorry, I have to ask.



Jack it up again and see if they spin freely. If you didn't completely reset the calipers to their full in position, they sometimes will lock up. Also, while doing that, did you allow for the fluid returning into the reservoir? If your lines were dirty, you may of pushed dirty fluid back into the system and a master cylinder will fail shut.



Try those first, then add more of what you did.

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