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Master cylinder is defective. Replace it.
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∙ 14y ago
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What are the symptoms of a defective master cylinder?
usually they will leak out the back by the booster, your brake pedal will slowly go to the floor at stops or the brake pedal will go right to the floor when pushed.
What causes brake pedal to go half way to the floor on a 1999 ford explorer?
Something is impairing the brake pedal to go to the floor. Only a mechanic can tell you what is happening.
Can worn brake pads make your brake pedal to go to the floor?
no you have a brake fluid leak somewere
1997f-350 brake pedal goes to floor?
ouch,are brakes adjusted correctly/ sit in vehical and pump pedal to get a full pedal,then hold pedal to see if it bleeds off and goes to floor,if it stays, replace shoes and pads if it goes to floor, there is a fluid leak somewhere is there brake fluid in the resevoir/ are there any brake fluid leaks ,check backside of wheels there is a brake fluid pump, on the chassis rail about level with the front of the front door on the left side.if this pump is bad your pedal will go to the floor
Why does the parking brake pedal go to the floor on a 97 suburban?
probably have broken parking brake cable.
Why do the brake lights on a 1992 Mustang only come on when the brake pedal is pushed all the way to the floor?
The brake light switch is out of alligment. Check on the brake pedal arm and readjust the switch.
Can the brake booster cause your brake pedal to go to the floor?
No, a busted brake booster will not cause the brake pedal to go to the floor. It will however cause the brake pedal to be extremely hard to push. A defective master cylinder will cause what you describe. Replace the master cylinder and bleed the brakes. It can because it happened to me. The booster lost vaccum and the pedal went to the floor. Sorry, you are wrong. The only reason the pedal went to the floor was because the master cylinder failed. The brake booster only boosts the pressure on the master cylinder and allows you to not have to push so hard on the brake pedal. Cars of yesteryear did not even have a brake booster and they stopped just fine albeit you had to push the pedal allot harder than with power brakes. A failing brake booster will not cause your pedal to go to the floor although it might cause it to go lower than normal before the brakes apply. As long as the master cylinder is good you will still have brakes, but you will have to really push hard and might even have to pump them up in order for them to stop the car.
Why does brake pedal feel normal most of time but occasionay go to floor on LX450?
I think you have air in the brake lines.
How do you know if the master cylinder is going out?
The brake pedal will sink to the floor when applied and the brake fluid reservoir remains full.
Why does brake pedal go to floor sometimes 96 olds aurora?
sounds like overheating of brake line, either from hot pavement, or cat converter. causes brake fluid to boil and loss of pedal.
How do you tell if my brake lines have a leak?
You will be adding brake fluid to the reservoir often.The brake pedal won't feel firm.The brake pedal may sink to the floor as you are applying steady pressure.Do a visual inspection of the brake lines looking for that wet spot.
How do you tell when the brake master cylinder is out?
Master cylinder may be leaking, brake pedal may slowly fall to the floor when you are stopped with your foot on the brake.
