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What causes brake pedal to go half way to the floor on a 1999 ford explorer?

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2011-07-30 20:42:36
2011-07-30 20:42:36

Something is impairing the brake pedal to go to the floor. Only a mechanic can tell you what is happening.

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sounds like overheating of brake line, either from hot pavement, or cat converter. causes brake fluid to boil and loss of pedal.


it is located to the right of the brake pedal



manualy lift brake pedal to see if they go out. if so check spring at pedal


dont fully understand? if the brake pedal went to the floor there is a hole in the line some where or braking system If you are saying it is going straight to the floor like "whoosh" without any pressure then it is either your brake booster or master cylinder or both.


Probable causes: Low or no fluid in reservoir; Worn brake pads/shoes; Air in brake lines; Leaking brake line.


A brake fluid leak in the system would do that. Check the brake fluid reservoir. If it is empty you are in need of brake work asap!


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.



A brake pedal going directly to the floor is a sign of a few things. First, you are in need of brake fluid. Second, the brake pads are probably almost worn out. They may be worn out past the point the ABS light would be active. The ABS light may also be burned out.


Bad brake switch. Typically located at the top of the brake pedal.


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



Any time the brake pedal is hard to press then you need to check and see if the brake booster is functioning properly.


check brake light switch on brake pedal maybe getting bad


Look at the upper end of the brake pedal under the dash area


The gas pedal, the brake pedal, and the steering wheel all do.


the brake light switch is mounted above the brake pedal on the metal lever


check the brake light switch. located on the brake pedal it may be bad


The first suspect when a brake pedal goes all the way to the floor is an empty - or almost empty - master cylinder. It could also be a bad brake booster, a ruptured line, etc. The car should be TOWED to a repair facility, and the cause found and corrected before the car is driven again.


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.



Usually located at the upper end of the brake pedal under dash area



The brake pedal will sink to the floor when applied and the brake fluid reservoir remains full.



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