A car that pulls to at least one side could be annoying and likewise dangerous. This braking problem can caused by several different things, even the tires (see below ), but the most typical cause is really a frozen caliper. As time passes, a caliper can freeze up gradually, a process which will go unnoticed for an extended time period.
One way a caliper can freeze up is from the piston upon the caliper being stuck in its bore. When the dust boot that protects the piston coming from the elements gets torn, water and debris will penetrate the metal inside the caliper and cause rust and corrosion. When the piston is stuck, and also the fluid pressure can't push it back straight into the bore easily, the pressure upon the pads will certainly be uneven and also the car will pull. To repair this issue you‘ll need to restore the caliper.
Another possibility could be that the pistons got bent, during a brake job or perhaps a car accident, and can't move freely anymore, causing the caliper to bind and limiting the quantity of pressure towards the pads.
The caliper also can freeze up when the caliper slide pins have lost lubrication simply since they Haven‘t been maintained properly. When the slide pins are your issue, they should be cleaned and lubricated or replaced. You can purchase an overhaul kit for calipers, but you are hard to locate and also your caliper might not be worth bringing to life. Buying a brand new caliper may cost more but you‘ll make up the value using the time you save. Been there, done that!
And also if the car stops straight on the brakes, but pulls to one side when you release the brakes, the brake hose needs to be replaced. the rubber gets old and somtimes can form a "one way valve" flap.. so the fluid is pushed into the caliper just fine, but it doesnt release on one side as quickly as the other.
when replacing the rubber lines, replace all 3 at the same time. the left front, right front and rear axle lines if one is worn, the others probly are too.
The Other Causes of a Pull to One Side When Braking
Another thing. Brake Fluid is hydroscopic (absorbs moisture) so keep the bottle and master cylinder closed as much as possible to prevent corrosion in the lines. As a parts guy I constantly saw people who had just done a brake job within the last 6 months who suddenly had line corrosion or seized calipers. The master cylinder being open for periods of time would actually absorb the humidity in the air and lead to this. It's worse in hot & humid Florida than other areas but something to be aware of.
Diagnostic And How to Fix Car Pulls to One Side When Braking
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