How To Diagnose A Brake Pedal That Goes To The Floor?


Asked by Sep 07, 2011 at 04:11 PM about the 1994 Ford Thunderbird LX

Question type: Maintenance & Repair

I have bled the brakes, flushed out the dark fluid from the previous owner. How do I tell if it is the Master Cylinder? Or the Brake Booster? Please Help me!

8 Answers


its the master cylinder for sure. ive rolled through a few stop signs because of it. not safe at all

2 people found this helpful.

First if the booster were bad your break peddle would be hard as a rock to push.your master cylender is bad and it may have leaking wheel cylenders they on rear breaks.

3 people found this helpful.

Thanks for your advice, I will pull it off today


You are so right. Thanks for your assistance

1 people found this helpful.

your master clynder might be bad did u check the vacum line hooked to it

1 people found this helpful.

what vac line??

1 people found this helpful.

this happened to me also. i found it to be a brocken brake hose to the passenger side front. check if fluid is in the master cylinder first though. if empty it was all pumped out through the brocken brake lineth

3 people found this helpful.

I got same problem 87 tbird is it the master cylinder cause I thinking of getting one for it

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