We recently changed the front brakes in my son's 1987 supra. However, the brake pedal is difficult to push down and seems like we lost the power brakes. Is this a vacuum issue? If so, what can we do? thanks, Roger
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I would jack up a front wheel and see if pushing on the pedal with the engine running will stop the wheel from turning. You need to know if the pressure is reaching the wheels, or if the pads and rotors are too slick to stop the car. Usually if the pedal is hard, the booster is not working or the brakes are glazed. Can you stop the car with the parking brake ? That only uses the rear brakes. You may need a second opinion from a different shop.
Buy brake pads. loosen lugs Jack car, place on jack stand turn wheel so front of tire is pointing out. remove tire remove caliper (two bolts on back side of caliper slide caliper off rotor. (if rotor is damaged, see about having it turned or replaced) take pads off caliper open hood and remove cap to mater cylinder reservoir using special tool (or C-clamp and something to protect piston) push the piston back into the caliper fully. place new brake pads on caliper. fit caliper on the rotor Secure caliper to wheel with bolts replace wheel remove jack stand remove jack tighten lugs on wheel replace hubcap start engine (do not drive yet!!!!!) pump brake pedal until it tightens up observe reservoir on master cylinder (fill if needed) replace cap pump brakes again take out for a test drive.
The brake lights on a 1993 Toyota Supra are located in the rear of the car.
As you stand behind the car , have a friend put his/her foot on the brake pedal. This will illuminate the tail section of the car and indicate where the lights are ...
TO ADJUST PEDAL HEIGHT ADJUST WITH A STOPPER LIMITING THE UPWARD TRAVEL OF THE PEDAL.PEDAL FREE PLAY IS ADJUSTED AT THE MASTERCYLINDER PUSH ROD.IF PUSH ROD IS NON ADJUSTABLE FREE PLAY IS ADJUSTED BY PLACING SHIMS BETWEEN THE MASTERCYLINDER AND THE FIREWALL.ON A FEW MODELS PEDAL FREE PLAY CAN ALSO BE ADJUSTED AT THE OPERATING SLAVE CYLINDER PUSHROD.PUSHRODS ARE AVAILABLE IN THREE LENGTHS FOR THE 310.PEDAL HEIGHT ABOVE FLOOR IS 6.73 - 7.13 INCH PEDAL FREE PLAY IS 0.04 - 0.12 INCH.YOU HAVE CLUTCH FLUID LONG AS YOU SEE BRAKE FLUID IN MASTERCYLINDER.IF MASTERCYLINDER LOW YOU HAVE TO BLEED THE THE CLUTCH MASTERCYLINDER BY LOCATING BLEED SCREW ON SLAVE CYLINDER. REMOVE THE BLEED SCREW DUST CAP.ATTACH A CLEAR TUBE TO THE BLEED SCREW.PUT OTHER END OF CLEAR TUBE IN A CLEAN CONTAINER OF BRAKE FLUID.FILL THE MASTERCYLINDER WITH BRAKE FLUID.OPEN BLEED SCREW 3/4 A TURN.DEPRESS CLUTCH PEDAL QUICKLY.HOLD IT DOWN.HAVE A HELPER TIGHTEN THE BLEED SCREW.ALLOW PEDAL TO RETURN SLOWLY.BLEEDER SCREW TORQUE IS 5 - 6 FT LBS.IF YOU SEE AIR BUBBLES CLEAR BLEED TUBE.REPEAT THE BLEED PROCESS UNTIL YOU SEE NO AIR BUBBLES.DONT LET CLUTCH MASTERCYLINDER GO DRY WHILE BLEEDING.IF SO YOU GOT START BLEEDING PROCESS ALL OVER.HOPE THIS HELP.
It sounds like the brake switch on the brake pedal arm is stuck its like a push button type switch when you press the brake pedal down it pushes the button in on the switch which makes the brake lights come on,when you take your foot off the brake pedal the button is supposed to come back out if it doesn't the brake lights will stay on.