brake pedal goes to floor, happened once!
12-21-2005, 02:00 PM
#16
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It hasn't been mentioned in this thread because the events aren't a good match for problem, but I'll toss it in anyway. Under very heavy braking when there is too much water vapor in the brake fluid the pedal can drop to the floor when the fluid boils over. This is a fairly common problem on the track.
The solutions are:
- flush your brake fluid every 2 years for street driving, much more often for track driving
- use racing brake fluid (like ATE super blue) that has a higher boiling point
- never let your brake pads wear thinner than the thickness of the backing plate
- don't ride the brakes, give them time to cool down before heavy use
The solutions are:
- flush your brake fluid every 2 years for street driving, much more often for track driving
- use racing brake fluid (like ATE super blue) that has a higher boiling point
- never let your brake pads wear thinner than the thickness of the backing plate
- don't ride the brakes, give them time to cool down before heavy use
12-21-2005, 03:20 PM
#17
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brake failure
does you car have any exaust leaks? hot exeaust like that generated from speed racing will boil brake fluid if the jet of exaust is directed at a brake line boiling fluid just compresses at least thats what you will feel when you try to stop. seems crazy but this happned on my sisters vw she was a speed racer. and of corse when the fluid returns to normal temp the brakes will return to normal function explaining intermiten brake problems
12-21-2005, 04:09 PM
#18
Burning Brakes
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No exhaust leaks on this car. No fluid missing from the reservoir. I tested it out last night and it wouldn't do go to the floor again.
This is one of those "insurance part policy" purchases, like a TB, WP, etc... Buy the master cylinder anyhow because you never know when you'll have a repeat wet your pants experience.
Another thing, you can't judge the condition of a master cylinder by its outward appearance. This one looks new, just alittle dusty, but it means nothing.
This is one of those "insurance part policy" purchases, like a TB, WP, etc... Buy the master cylinder anyhow because you never know when you'll have a repeat wet your pants experience.
Another thing, you can't judge the condition of a master cylinder by its outward appearance. This one looks new, just alittle dusty, but it means nothing.
12-21-2005, 04:32 PM
#19
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Simmilar issue one a long time ago in 89 S-4.
Driving along no big deal... hit some traffic..... uhm... no brakes, pedal to the floor.
Kept pumpin ghtem and pumping them with very little results.
I pulled over for awhile... wasn't going anywhere anyways with the traffic.
Accelerated to 20 mph on the emergency lane... brakes acted like nothing had happend.
Never had an issue wth them afterwards. ???
Driving along no big deal... hit some traffic..... uhm... no brakes, pedal to the floor.
Kept pumpin ghtem and pumping them with very little results.
I pulled over for awhile... wasn't going anywhere anyways with the traffic.
Accelerated to 20 mph on the emergency lane... brakes acted like nothing had happend.
Never had an issue wth them afterwards. ???
12-21-2005, 11:04 PM
#20
Rennlist Member
I had the EXACT same problem. it ended up being a rubber o-ring in the master cylinder.... it was nasty... it would be fine for a time then out of no where the pedal would go all the way to the floor.... let off hit it again and i had full pedal to stop the car.... but very scary. I rebuilt the cylinder
