82 eldorado spongy brake issue
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Cadillac Seville / Cadillac Eldorado Forum Discussion, 82 eldorado spongy brake issue in Past Cadillac Vehicle Discussion; My issue is spongy brakes.I have replaced the rubber hoses .they've been bled multiple times still poor braking..this car has ...
  1. #1
    WWlll's Avatar
    WWlll is offline Cadillac Owners Member
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    82 eldorado spongy brake issue

    My issue is spongy brakes.I have replaced the rubber hoses .they've been bled multiple times still poor braking..this car has four wheel disk brakes,,,can anyone help me out with this one of many issues .pads are new.Brake lite comes on but goes out after the pedal is. Depresses a couple of times.I replaced the map sensor this morning,,disconnected the battery cleared the codes..started her up,and got code 52,,but I had to keep my foot on the gas pedal otherwise she'd stall..any ideas on my brake problem. This is 82 eldorado with a 4100 or 4.1 engine..

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  3. #2
    WWlll's Avatar
    WWlll is offline Cadillac Owners Member
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    82 eldorado spongy brake issue

    My issue is spongy brakes.I have replaced the rubber hoses .they've been bled multiple times still poor braking..this car has four wheel disk brakes,,,can anyone help me out with this one of many issues .pads are new.Brake lite comes on but goes out after the pedal is. Depresses a couple of times.I replaced the map sensor this morning,,disconnected the battery cleared the codes..started her up,and got code 52,,but I had to keep my foot on the gas pedal otherwise she'd stall..any ideas on my brake problem. This is 82 eldorado with a 4100 or 4.1 engine..

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    83 eld.3.jpg

  4. #3
    carnut is offline Cadillac Owners Master
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    Re: 82 eldorado spongy brake issue

    It's common for the rear caliper pistons to seize from lack of parking brake use. Every time it's used, the piston should ratchet out to take up the pad wear clearance. Jack a rear wheel up off the ground and while someone holds down the brake pedal, see if you can rotate the back tire. If you can, the rear calipers are not gripping the rotors. If this proves to be true, the best repair is rear caliper replacement with rebuilt ones. There are levers on the rear calipers that are rotated forward every time the parking brake cables move. Applying then releasing the parking brake enables a slight unscrewing of the piston within it's bore thereby decreasing the clearance between the pad and the rotor surface. I would bet you've been stopping the car with the front brakes a long time. When I wrote service repairs on these Eldo's and Sevilles as well, I would apply the parking brake and the brake pedal at the same time in the service drive. If, when put in gear, the car moved forward, I knew it needed rear calipers. Some will say you can adjust the clearance by removing the rear cables and moving this lever back and forth by hand until the clearance decreases but in my experience this has about a 10% success rate. These pistons would seize when the car was 5 years old, let alone 25 years! After you get the calipers on, post back on this same thread and I'll walk you thru the proper parking brake adjustment which is critical to proper function.

  5. #4
    carnut is offline Cadillac Owners Master
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    Re: 82 eldorado spongy brake issue

    Why is this posted twice? and why isn't it in the Eldorado/ Seville section? or at least the brakes/ suspension section.

  6. #5
    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
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    Re: 82 eldorado spongy brake issue

    Good question - it's in the wrong forum. Off to the Seville/Eldorado forums, and his duplicate threads merged.

    WWill, Please do not start duplicate threads or post in the wrong forums. Thanks.

  7. #6
    rodnok01's Avatar
    rodnok01 is online now Cadillac Owners Connoisseur
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    Re: 82 eldorado spongy brake issue

    If your pedal is going to the floor and light is coming on and you're NOT losing fluid my money is on the master cylinder. If it has been changed? did you bench bleed it and was it the proper application.

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