1997 Hardbody Brake Problem

1997 NISSAN FRONTIER
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FRANKNT
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I have a 1997 Hardbody XE 4wd, 4cyl, 5spd, standard cab. The brake pedal goes to the floor only while the engine is running, as soon as I turn the engine off, it is firm again. What could this be?
Nov 30, 2007 at 12:09 PM
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MERLIN2021
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Perform this test Shut engine off, opump brake pedal until the air in the booster is gone. Then hold pressure on it for a minute, Does the pedal sink? Have you checked the fluid level in the master cylinder? Is the brake fluid contaminated with oil or tranny fluid? Take a little bit out of the reservoir, and add it to a cup with water in it, swirl, any oil float to the top? Get back with these answers!
Nov 30, 2007 at 12:41 PM
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FRANKNT
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Ok I shut off the engine and pumped the brakes until the air was gone and held it down for a minute. The Pedal stayed in the same position.
The fluid is a brownish color and is at its normal level. I took some out and put in a cup with some water and it became milky but no oil.
Nov 30, 2007 at 1:19 PM
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MERLIN2021
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No leaks? fluid level full? is ABS light on? ANY recent brake work? I have seen this if the pads are not properly seated in the slide area...
Nov 30, 2007 at 1:24 PM