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  1. obe12

    Brake Pedal Initially spongy then firms up

    Good point, mine are tight, just repacked and replaced new rotors, front and rear along with new calipers and stainless brake hoses. Pedal is spongy without moving the truck. consensus is trapped air in the ABS unit and LsPV valve restricting fluid pressure to rear. My LC was owned by one...
  2. obe12

    Brake Pedal Initially spongy then firms up

    Sorry, forgot to ask How did you delete the LSPV on the 80?
  3. obe12

    Brake Pedal Initially spongy then firms up

    It feels to me, the LSPV is the issue restricting fluid to rear brake calipers. The thing I considered, was wrong master cylinder was installed, rear drum brake option, therefore no residual valve internal in the master cylinder. To hold some brake fluid front backing up into the master...
  4. obe12

    Brake Pedal Initially spongy then firms up

    My 1994 LC 80 series brake pedal is initially spongy, 1st 1/4 pedal travel then firms up. The truck was this way from the day I bought it 12/2023. Now it would feel like rear brakes shoes out of adjustment on a rear drum brake truck. Replaced all 4 calipers, Pads, Rotors, Stainless Steel brake...
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