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Brakes lockup without touching brake pedal - F-250 Ford Cars & Trucks

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You need to jack up the vehicle and see which wheel is hard to turn. That wheel has either a bad caliper or hose. What is the year make and model?

Posted on Jul 10, 2010

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SOURCE: rear brakes lockup when you touch the pedal

there is a brake regulator on modern systems which controls the power between the front and the back breaks this maybe defective

when a car breaks most of the breaking force is placed on the front breaks as that is where most of the energy is heading so the car sinks down. if the same amount of breaking force is placed on the back wheels as they rise they have less friction as the weight is forward so they will lock up.
the device is designed to maintain more force to the front, if it fails the system will apply even force to all wheels.

recommend cosulting a certifed garage or local dealership about this problem.
Warning; continual driving with defctive breaks is illegal and may result in injury or loss.

Posted on Nov 13, 2009

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1 Answer

Wont shift into overdrive


Most often either a fuse blown, or misadjusted brake pedal switch ( the one that kicks it out of lockup when you touch the brakes)

Dec 09, 2014 | 2005 Cadillac Escalade

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Transmission wont lock into od


The brake light switch has a separate wired switch in it that puts power to the OD lockup when pedal is up. When pedal is depressed the brake lights come on and the OD goes off. If this switch connected to the brake pedal is faulty or the wires are not connected, OD will not work for it isn't getting a signal to do so.

Oct 14, 2014 | Ford Cars & Trucks

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BRAKES LOCKUP


one of your sensors is out on your ABS system. What will work until you want to fix it is to pull the fuses for the abs( the one from under the hood) and theres one you can pull from the fuse box on the left side on the dashboard. you will not have abs braking but the petal will not get hard and unless you drive in snow its not a ploblem driving without ABS

Apr 19, 2013 | 1999 Chevrolet Blazer

1 Answer

Trans down shifts at 60 while cruising


Thinking it's coming out of lockup not actually downshifting,
possibly brake pedal switch adjustment,TPS, or lockup solonid is
faulty. Notice how you can cruise at 60 and just barely touch
the brake pedal,it will come out of overdrive,you can feel it.
If you have a tach the lockup will only change the RPM about
500 ,if it was downshifting it would be more like 2000.

Apr 19, 2013 | 1994 Chevrolet Camaro

4 Answers

I am in need of help. For some reason my brake lights come on all by themselves. The car will be sitting in park, not on and the lights just come on. I have to go and hit the brake petal to get them to...


check brake light switch where the brake pedal arm is.the brake light switch is loose or broken.or bracket holding brake light switch is loose or broken fell out of position. the brake light switch suppose to be touching the brake pedal arm to turn off brake lights.if switch not touching pedal arm.switch is broken,if brake switch touching brake pedal arm,and brake lights still on.replace brake light switch.

Apr 06, 2011 | 2001 Pontiac Aztek

1 Answer

Brake pedal is stiff and will not allow car to start. what could the problem be. when key is turned over, there is no sound. lights on the dash light up and brake light is on.


the brake light switch is on the top back of brake pedal arm. if brake lights are on without touching brake pedal, its out of adjustment or bad ( the switch ).

Nov 18, 2010 | 1998 Chevrolet Lumina

1 Answer

My 1996 taurus has the brake lights constantly on. when you disconnect the switch by teh brake pedal the car will not shift out of park but teh brake lights turn off???


CHECK BRAKE LIGHT SWITCH TO SEE IF ITS TOUCHING THE BRAKE PEDAL.IF BRAKE LIGHT SWITCH OR BRACKET LOOSE AND AWAY FROM BRAKE PEDAL BRAKE LIGHT WILL STAY ON.IF BRAKE LIGHT SWITCH INTACT BRAKE LIGHT SWITCH NEED REPLACING.WHEN REPLACING BRAKE LIGHT SWITCH OR IT NEEDS ADJUSTING MAKE SURE BRAKE LIGHT SWITCH PLUNGER TOUCHES BRAKE PEDAL ARM WHEN YOU RELEASE BRAKE PEDAL BRAKE LIGHTS SHOULD TURN OFF.

Sep 01, 2010 | 1996 Ford Taurus

2 Answers

Rear brakes lockup when you touch the pedal


there is a brake regulator on modern systems which controls the power between the front and the back breaks this maybe defective

when a car breaks most of the breaking force is placed on the front breaks as that is where most of the energy is heading so the car sinks down. if the same amount of breaking force is placed on the back wheels as they rise they have less friction as the weight is forward so they will lock up.
the device is designed to maintain more force to the front, if it fails the system will apply even force to all wheels.

recommend cosulting a certifed garage or local dealership about this problem.
Warning; continual driving with defctive breaks is illegal and may result in injury or loss.

Nov 13, 2009 | 1996 Chevrolet Cavalier

1 Answer

1994 mazda cronos 2.00 v6 auto car idles ok drives ok but when i come to a stop it stalls in gear been atuo


This sounds like a problem with the torque converter lockup system. Usually the torque converter lockup solenoid is at fault in your condition. This solenoid usually locks up the torque convertor (which acts like a clutch in an automatic transmission) when you are driving at a certain speed, and unlocks it when you press the brake, and/or come to a stop. When a torque converter stays locked up, and you stop the vehicle, it acts like a vehicle with a manual transmission, if you bring the vehicle to a complete stop without applying the clutch pedal, the brakes stall the engine. Basically, if the torque converter can't unlock, even when you come to a stop, the engine is still locked to the transmission, and even when you apply the brakes, the torque converter doesn't slip and freewheel like it should, but instead stalls the engine.

May 07, 2009 | 1994 Mazda 626

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