Question about 1996 Mercury Sable

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Pulling up to an intersection and the brakes went out. I can only build a small amount of pressure when I pump them, no brakes when I go backwards. It has brake fluid. Maybe a master cylinder?

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Hello. You could have a leak in any one brake caliper, or a bad master cylinder, leading to air in your brake fluid. You can start by looking behind wheels and around master cylinder for any signs of brake fluid leaks, it does not wash off easily. If fluid was changed recently and your brake parts are all fine you will at least need to bleed all the calipers to get rid of that deadly brake line air.

It doesn't take much of a leak to cause all this trouble, as it also lets air into your brake fluid. Once it does the problems you mentioned occur.

These problems can lead to disaster of course so at this point you don't want to take chances on the road, it happened to me once, yikes!

Posted on Oct 23, 2009


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