My brake light came on and I instantly noticed my brakes become spongy
Your brake master cylinder could be low,if it goes too low,then air will get in and become spongy.
SOURCE: brakes.
remove the rear brake drums and adjust the rear brakes manualy ,dont forget to remove the lip that build up on the outer edge of the brake drum either with a coarse emery or a small disc cutter to rub it down so brakes can be adjusted to max amount inside the drums
SOURCE: Ford Bronco II spongy brake pedal
if the booster is bad the pedal would be hard sounds like the e-brake is stuck take off the drums and make sure the arms are all the way back then did you adjust the rear brakes after changing the shoes
SOURCE: 1992 Ford F350 Dually Diesel Truck Brake System problem.
Adjust your rear brake shoes. Then rebleed the system. Start at the master cylinder Bleed master first then the wheel furthest away from the master (right rear then left rear then right front then left front. Do that and your pedal should be good.
SOURCE: 98' Ford Windstar has a spongy brake
Have you had anyone try to clean and adjust the rear brakes? You will need a shop to scan the van for ABS codes first to cure the ABS light.
SOURCE: Spongy brakes after bleeding them 2 times. Should I try to bleed the master cylinder or replace it?
Honestly your guess is as good as mine. But I don't think the master cylinder is NOT bad you still have air in the system. Get a big bottle of brake fluid bleed all four sides until you run out of fluid or your brakes work properly. You should divide the bottle's content in four, then use each quantity in each side. You'll be removing air and contaminated fluid from the system. Get a small hose that fits on the bleeders and an appropriate container. I have a good feeling if you do this your brakes will work just fine. I don't know how you are bleeding the brakes. I'll let you know the proper way just in case. This is a two man job, with the wheel off, have someone start the car. Have them pump the brakes a few times to get pressure. 1With the brake pedal UP open the bleeder, 2then have your assistant press the brake pedal all the way down and leave it completely pressed down. 3Close the bleeder valve, once close and only with the valve closed have'm release the brake. Repeat as necessary, bake depressed, open valve first then press brake. DO NOT depress until valve completly closed. Close valve THEN depress. Good Luck!
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