I pressed the brake pedal there were no brakes?

Tiny
MARKVELLUTATO
  • MEMBER
  • 1999 CADILLAC DEVILLE
  • V8
  • FWD
  • AUTOMATIC
  • 157,000 MILES
I was driving my 1999 Deville and went to stop and I had no brakes. Fortunately this happened in my apartment parking lot and nobody was in front of me! When I pressed the brake pedal there were no brakes and the pedal just kept going down to the floor. When I stopped I noticed a brake light on the dash and a message that said check brake fluid. The fluid was way down so I bought a 12 oz bottle and it took it all and was just above the full line. However, I still had no brakes. I think this happened to me once before some years back in another cadillac that I owned and it was the master cylinder. What do you think may be wrong? If it is the master cylinder, can you give me an estimate as to what it will cost to fix? My car is nearing the end of it's life and don't want to spend to much on it. Thank for your help.
Wednesday, February 25th, 2015 AT 9:30 AM

1 Reply

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
It does sound like the brake master cylinder is bad but to be sure here is a guide to help you check it out.

https://www.2carpros.com/articles/brake-pedal-goes-to-the-floor

If the brake master is leaking you could have a brake booster that is full of brake fluid so look for that as well.

Here is how to change the brake master out with instruction in the images below.

https://www.2carpros.com/articles/how-to-replace-a-brake-master-cylinder

Check out the images (below). Please let us know what happens.
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Wednesday, February 25th, 2015 AT 9:31 AM

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