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ABS Pump Won't Bleed Rear Brakes Posted by saabaviator [Email] ![]() ![]() |
1990 900 Turbo - Replaced rear brake calipers and hoses. Tried using the ABS pump with the ignition switch on, brake pedal depressed and bleed screws open. But the ABS pump wouldn't bleed out the air and fluid. The ABS pump will run about 10 - 15 seconds and shut off. If I pump the brake pedal 10 times or so, the pump will run about 30 seconds or so. The brake fluid light goes off after the pump runs, so the system appears to be pressurized. However, it doesn't seem to run long enough or have enough pressure to remove the air and fluid through the rear brakes like it should.
Brake system appeared to work OK before I swapped out the calipers. However, the brakes would occasionally lock up under a hard stop. Has anyone encountered this problem? Appreciate any help.
George W.
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