Once every 6 months or so (usually in cold weather) the brakes don't function on startup. the brake pedal will be depressed to shift into gear (forward or reverse) but as soon as the car is in gear it will just shoot away. while the car is shooting away the brake pedal remains mushed on the floorboard.
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Man, you've spent some money without isolating the problem. Throwing parts at a problem is never a way forward. The brakes not working when its cold? When you pump the brakes does the pedal become hard/normal in cold weather or at any time? What happens if you plug the booster hose and start up, is the pedal hard instantly? You say there is engine oil in the booster? how much? What mileage has it done and is the engine in good condition ie serviced? I know this sounds silly but you haven't really got to what the dealer is supposed to have done for your money. I find it difficult to believe there is no experienced tech who couldn't work this out. He should do things like clamp off the flexi lines to each wheel in turn and then in pairs then all together etc with proper brake hose clamps to see if that makes a difference. He should be leaving it out in the cold and seeing for himself what happens.
Did the shop go through this sort of process? Careful checks and process of elimination is what gets to the bottom of these faults.
Hello rickyjkoch: My name is Roger and I will help with your question. With the engine off, press the brake pedal down several times. Hold the pedal down and start the engine. The brake pedal should drop 1 1/2 to 2 1/2 inches toward the floor. If the pedal stays up and does not drop the booster has a problem. However if you hear a hissing sound from the dash area of the brake pedal the booster should be replaced. Should you need further help please just ask. Please rate the answer. Thank You for using Fix Ya. Roger
check your brake fluid, if fluid is low light will come on. the only other time is if the brake pedal looses preasure and then the pedal would be low, also you may what to have brakes checked, when fluid goes low it also means brakes may be low, hope this is helpful.
That's the most interesting problem I've heard all week. I'm pretty sure this has to be problem in the switch that operates the light. Are you positive it's the brake light and not just the tail light? Tail light switch is part of the headlight switch. If you're sure it's the brake light, replace the switch under the brake pedal arm, under your dash. I think this is the problem because unless the circuit is engaged at these switches, it's impossible to activate them from anywhere else. Brake switch is easy. You can do it your self. Headlight switch usually involves removing the steering wheel and is kind of a pain but not too overwhelming.