OUR CAR'S BRAKE CALIPER HAS LOCKED UP AND WE NEED NEW ONES WE ARE CURRENTLY OVERSEAS AND THERE ARE NOT MANY OPTIONS SO WE ARE LOOKING ON LINE BUT THERE ARE MORE THAN A COUPLE OF CHOICES AND WE NEED TO ORDER NOW THERE ARE "MARKED 36MM PISTONS, MARKED 38 MM PISTONS AND MARKED 40 MM PISTONS AND WE DON'T KNOW WHICH ONES TO BUY. PLEASE HELP SOON
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You need to perform a complete brake caliper service.
Sticking calipers could need piston seal and rubber boot replacement, inspecting if the cylinder bore got twisted or out of round (when an unproperly trained brake technician puts the caliper in a bench vise and deforms it!).
Brake calipers need clean and properly lubricated sliding pins (the shiny, Chrome plated rods that support the caliper on the caliper mountong bracket), and new rubber boots that prevent dirt from getting on them. Proper high temperatura brake caliper silicone based grease is made by "ATE", "Bendix" and others, but you need to avoid overapplyin it or getting ANY on the rotor or brake pad surfaces!
I have achieved completely quiet brakes, without any noise by applying a coat of a marvelous substance called "Husky Brake pad compound" available in a small can. Follow directions and don't overapply it. Best luck. Amclaussen.
all dodge caravans from 2002 through 2011 have known problems with sticking calipers. if you google caravan brake problems you will see all the complaints. there are TBI's and recalls on them. I have a 2005 dodge caravan in my garage with all 4 calipers locked up. It is a good idea to replace the brake pads with the best ones and new rotors to
Hi there...when you say it "sticks" are you think the pistons are not retracting in the calipers? Did you replace calipers with NEW ones or remanufactured/rebuilt ones? How about the caliper slides, did you replace those? About half the time this is the problem on a sticky caliper that is causing excessive brake wear. If they are off just a little bit & no longer "true" the caliper will bind and the brake pad will steadily rub on the rotor. They need to lubed with disc brake grease and the protective boot needs to be in good shape to keep the brake dust and debris out too. This is an inexpensive part, easy to replace and often overlooked by shop techs. Good luck, i hope this helps. Thanks for using FixYa!
your brake caliper or calipers,may be sticking.when you drive it at night,for say 10 miles,then look at the fronf wheels,do you see a fire red glow behind the wheel on the brake caliper.? easy way to tell.jack the car up with the emergency brake on. pump the brakes with engine running,with the transmission in neutral? can you spin the tires by hand? if not,then you have a sticking brake caliper,which will burn the brakes up fast.eventually,the brake caliper will "lock" and then you will not be able to move the car in any gear.if you suspect bad brake caliper,replace both front brake rotors and calipers with new brake pads. easy way to eliminate the brake problems.if you replace the brake calipers and pads only.the rotors may still be warped due to all the heat that occured with the bad brake calipers. you will have a bad steering wheel vibration when braking otherwise. thank you,for choosing fixya.com!
It is possible that you have a caliper locked up. When in gear, do you notice any attempt at movement? A locked up caliper ( or wheel cylinder if you have drum brakes in the rear) will keep the car from moving but it will TRY to move - you will notice a raising of the front of the car if your brakes are locked up. It would be best to have it towed to a shop unless you have mechanical skill sufficient to change the brakes yourself. You will probably need to replace the rotors as well as the brake pads and calipers. The caliper pushes the pads into the rotor which causes friction sufficient to stop the car. Hope this helps!!
You'll need the Allen or Torz wrench that fits the locking bolts on the caliper so you can remove the calipers and you will need a caliper compressor to compress the caliper cylinders to install the new brake pads once you replace the rotors. I would have the Rotors checked to verify they need to be replaced before replacing them. It is possible you can save money by simply having them turned instead. $25 for each rotor is better than the normal $150 to $250 to get new ones.
You may have contaminated brake fluid. Try flushing out the brake lines, calipers, and master cylinder by bleeding the heck out of the brakes. Use a NEW can of brake fluid (see why below). This is something overlooked in vehicle maintenance. Whenever doing a brake job, flush the system. I learned the hard way, having calipers drag, not fully releasing, to change them and have it happen again. Finally figured out it was bad fluid which was ruining the calipers. Brake fluid absorbs moisture, which will wreck the system. Just leaving a bottle of fluid with a loose, or missing cap will allow moisture to enter. Brake lines will rust on the inside, and loose particles of rust floating around will cause big problems.