Question about 2001 Ford Expedition

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Changed pads rotors and calipers on 01 expedition because the pedal was soft and the calipers wer leaky but now cant get pressure when bleeding

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Remove the vacuum reserve by pumping brakes several times with engine off. Fill master cylinder reservoir with clean brake fluid. Check fluid level often during bleeding procedure, do not let reservoir fall below half full. Loosen, then slightly re-tighten bleeder valves at all four wheels. Repair any broken, stripped or frozen valves at this time. Start with the furthest wheel from the master cylinder (passenger rear, driver's rear, passenger front, driver's front) Place transparent tube over bleeder valve, then allow tube to hang down into transparent container. Ensure end of tube is submerged in clean brake fluid. Instruct an assistant to slowly depress brake pedal one time and hold. Crack open bleeder valve, purging air from cylinder. Retighten bleeder screw and slowly release pedal. Wait fifteen seconds, then repeat steps seven and repeat these steps until all air is bled from system. Repeat steps for next wheel in order. If pedal is still "spongy" and not firm, repeat steps beginning at step number 4.

Posted on Aug 21, 2010

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I have a 2007 Dodge Ram 1500. I had to replace the front brake pads, rotors and calipers. After bleeding the brakes I still have a soft pedal. when pressing it the pressure builds up but after pumping then...


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When changing pads and you push the caliper in for the new pad you should open the bleed screws. , then close and re-assemble. press pedal and open bleed screw and let it drip a little . gravity bleed. Did you turn the read caliper piston in and then press it down? The rear piston must be aligned with the pad. Did you pump the parking brake to reset?

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Replacing brake pads involves pushing the pistons all the way back into the the caliper. This will force fluid up into the master cylinder. Sometimes it also allows some air to get past the piston seal and cause 'soft' pedal. In this case bleeding is required. Anyway the brake fliud should be completely changed by pressure bleeding at this time.

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Mushy brakes are almost always 1 of 2 things:
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I chaged front brakes on my 2002 audi a4 tried to bleed, but pedals still soft. does anyone has a solution to this?


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1 Answer

Brakes


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