[rtyauch301]

ok so what would cause a break pedal to return slow for example i hit my breaks stop let off the car starts rolling right away bet the pedal moves real slow up slow enough that i can stop put it in part get out walk to the baack and wait a few seconds for the lights to go out...

[eloc431962]

What are you working on power brakes ?


Cole

[eloc431962]

Don't know why i ask that last question i must be loosing it. There is a relief valve in the sealing ring at the plunger input failing to let in fresh air. Sounds like new booster time to me.


Cole

[rtyauch301]

ahhh why didn't i think of that thanks it is the original booster from 1970 so probably

[SSedan64]

Cole that wasn't a Dumb question.
It could also be the inside of the Brake hoses collapsing. It's happened to me several times. The Master Cyl. pressure will force fluid thru the lines/hoses but there's no pressure to pull the fluid back. Can cause a slow Pedal return or locked brakes.
Had an old 71 Dart w/Manual Drum/Drum brakes, press the pedal 1 time and both front brakes would be locked for an Hr. or more. Of course I started at the Master Cyl. then Wheel Cly. and finally hoses. My Dad said "Hoses" when I asked before starting, I was young & dumb but, was thinking how could both hoses do this at the same time.

[rtyauch301]

Originally Posted by SSedan64

Cole that wasn't a Dumb question.
It could also be the inside of the Brake hoses collapsing. It's happened to me several times. The Master Cyl. pressure will force fluid thru the lines/hoses but there's no pressure to pull the fluid back. Can cause a slow Pedal return or locked brakes.
Had an old 71 Dart w/Manual Drum/Drum brakes, press the pedal 1 time and both front brakes would be locked for an Hr. or more. Of course I started at the Master Cyl. then Wheel Cly. and finally hoses. My Dad said "Hoses" when I asked before starting, I was young & dumb but, was thinking how could both hoses do this at the same time.

replaced em both about 3 months ago when i had one blow pedal was slow before and after

[pepi]

Could it be the peddle hinge gummed up under the dash; interference of some sort.

Is the peddle moving slowly look for that, you talk about the brake lights no going out, but the brake are releasing. The other option is the switch itself being slow to reset.

[001mustang]

If master cylinder bore, orifices, or piston is not clean the pedal will be slow to return.