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Brake systems on vehicles are typically driven by either pneumatic or hydraulic systems that multiply the force applied by an operator to slow a vehicles rate of speed through the use of friction.

17 votes

Mechanic sent me this image and said my brake rotors should be replaced. Does this seem right?

The shiny rings on the rotors are the only parts that are doing any useful work braking the vehicle . The dull rings are rusty and are not serving any use. The rust rings will have worn the matching …
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15 votes
Accepted

Why does brake pedal ever move

Without this you would find it very difficult to press the brakes hard enough to stop the vehicle. I presume this is the point you are questioning. …
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11 votes

Does a Car Keep Moving If Neither Accelerator, Nor Brake Is Pressed?

Note, most of these answers are very specific to an automatic transmission and also a gasoline (petrol) engine - The position of the throttle generally controls the volume of air allowed to enter the …
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9 votes

Why does my brake pedal go to the floor when i start the truck up?

Presumably it is putting the brakes on when this happens. If this is true, it is nothing to do with bleeding. …
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6 votes

1996 Ford E350 Club Wagon - Brake pedal will not return

Since the brakes stay on, it could be the brake booster is assisting when it shouldn't. To verify this, you could disconnect the vacuum pipe that goes to the booster to see if the pedal the raises. …
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6 votes

Why do you have to replace brake pads on both rear wheels at same time?

If you were to stamp on the brakes in an emergency, you wouldn't want the car to swerve into oncoming cars because the brake on one side of your car worked better than the other. …
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4 votes
Accepted

Occasional ABS fault

It appears that as soon as the vehicle detects a wheel has locked up, the ABS goes into failure mode. This would suggest to me that you may have a fault in the abs module. If it was a wheel bearing …
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4 votes

Does cruise control usually involve braking functionality?

The computer then takes over controlling the speed of the vehicle using the brakes. This function is mainly for off-roading. …
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4 votes

Brake pads sliding (?) between reverse and forward?

It is possible that the rear wheels nuts/bolts haven't been tightened correctly, which is allowing the disc/rotor to rotate slightly relative to the hub until it hits the studs, when you brake.
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4 votes
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What could cause drivers side brake drum wearing more than passenger side brake drum?

It is possible that something only seizes when the brakes are hot, but this is a good place to start. …
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4 votes
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Does the brake pedal always vibrate when ABS kicks in?

I can't answer for definite that the brake pedal on all cars vibrate when the ABS kicks in, since I don't have experience with all cars. When you press on the brake pedal, the brake master cylinder cr …
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3 votes

Brake pad wears faster than other three

Since you have replaced all the calipers, the most likely issue is that the slider mechanism that the caliper rides on is seizing. Each brake caliper holds 2 pads, if it is the slider that is at faul …
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3 votes

I just changed my brakes and hear a knocking noise when i stop accelerating

Did you tighten your wheel nuts correctly? This could be a very possible cause. Check them ASAP.
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3 votes
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What can cause two deep "stepped" grooves in a rotor?

The 2 “step-like” grooves that you describe are all that is remaining of the operational part of the brake rotors. The rest of the surface is covered in rust and is not being used at all for braking. …
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2 votes

Brakes knock and make springing sounds shortly after starting to drive

I have experienced a similar fault on a car where the ABS would come on unexpectedly. This turned out to be a worn wheel bearing which was allowing the gap between the reluctor ring and the abs senso …
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