Question about 1989 Ford Thunderbird

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1989 ford thunderbird standard brake system has hard pedal

My 1989 ford thunderbird standard brake system has a real hard pedal when running and when not. When I am running the car and using the brake I can smell burning brake shoes, like they are locked. All wheels spin freely when the car is off, in neutral, and jacked up. So, it is not a locked caliper. What is causing this? the power assist system?

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  • David Belser Jan 21, 2009

    I now need to replace the brake vacuum booster, because yes the original one was broken. The rod which attached to the brake pedal linkage came off. Unfortunately, I cannot get the replacement brake vacuum booster installed because there is not enough room to squeeze the booster with the rod attached into the area where it gets bolted in. The Hayes manual and the instructions that came with the part both say to just slide it in and bolt it up, but the part will not fit between the the firewall the engine and the wheel well area. Do I need to pull the engine or something?

  • jon8989 Feb 24, 2009

    The brakes wont work. I have full fluid and brake shoes and it wont stop when i put the pedal to floor when going more than 20mph

  • RAY CRAZE
    RAY CRAZE May 11, 2010

    is the emergency brake engaged and the light is just not coming on!!!

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You are correct in the assumption that the power assist is the problem. The brake booster has either failed completely or has a broken vacuum line. Please check that the booster lines are intact and if so, get yourself a new booster.

Posted on Jan 16, 2009

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Some how the brake booster is not getting vacum or holding vacum. check the hose at the booster for vacum while engine runs. if that has vacum, replace the booster.

Posted on Jan 16, 2009

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I would think the power brake booster has failed, do u hear any hissing when u press the brake pedal?

Posted on Jan 16, 2009

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