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Old 01-19-2007, 07:34 AM
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2004 Impala brake problem

I work part time for a Ford dealer. There is a 2004 Impala in the shop that the brake pedal goes almost to the floor the first time you touch it and then it's okay unless you go into reverse. If you go into reverse and then back to drive, it goes to the floor again the first time and then it's okay and the brakes work fine. They replaced the master cylinder and that didn't fix it. Any ideas?
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Old 01-19-2007, 07:47 AM
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I'm assuming it has 4 wheel disc? if not check the rear shoes for adjustment, maybe calipers are sticking closed.

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Old 01-19-2007, 07:51 AM
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2004 Impala brake problem

I'll watch the repair order and see what the techs end up doing to correct it. I work is parts but I see the various problems that come through and this one caught my eye. Thanks for the input.
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Old 01-20-2007, 11:37 AM
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Wierd.

Check and see if it has an automatic parking brake release controlled by vacuum, like the Lincoln's do. It could be a diaphram leak when the release mode is tripped during the R-F shift? I would think that would make the pedal hard instead of going down, but.....Just guessing, but their must be some reason the shifting makes a difference.

Does it have anti-lock brakes?

Please post back when the solution is found. Thank you.
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Old 01-20-2007, 03:14 PM
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2004 Impala brake problem

One of the front pads was broken in half. Who'da thunk?
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