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Old 03-28-2012
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brake problem

2001 ford ranger edge

4 liter
I have rebuilt the entire truck.
new back frame
all new brakes
new shocks
new cross pieces
all new brake lines.
I have bled all the lines and get good pressure when the engine is not running but very little brake pressure when driving. Goes almost down and then the anti lock clicking sound kicks in. About 1 nerve from tossing a match in the tank.
Help
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Old 03-28-2012
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Does the ABS light come on?
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Old 03-29-2012
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No
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Old 03-29-2012
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I would do the obvious and check for leaks at the rear wheel cylinders and bleed the brakes again in this order: 1-right rear wheel 2-left rear wheel 3-right front wheel 4-left front wheel. It could also be a bad master cylinder or brake booster. Have someone pump the brakes and listen for any hissing sounds which would be your brake booster. If you have no brake fluid leaks and the fluid level does not change but the pedal still goes to the floor then it is either your master cylinder or the rod that goes into the back of it.

I hope you find your problem and when you do, post it on here!
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Old 03-29-2012
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First check the following fuses: CJB #14 (10amp) #11 (7.5amp) PDB under hood # 3 (50amp) # 7 (30amp).

Next, verify the yellow ABS lamp lights up for about 3 seconds when the key is turned to Ignition 1 position.

Next, with the key off remove fuse 14 from the CJB and then turn key on. The yellow ABS lamp should light up and stay on (this will disable the ABS system). Drive around block and see if there is any change in operation. Turn key off and replace fuse.

Did you replace the front rotors? If so, did you ensure they had the ABS sensor ring? Ref. Click Link
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Old 03-29-2012
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I am going to check the sensors because I believe it is the abs. I put on new rotors but had the problem before I replaced them.
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Old 03-29-2012
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If you pull fuse 14 in the CJB it will disable the electrical operation of ABS system thereby eliminating any suspect sensor operation.
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Old 03-31-2012
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When my booster went it would hiss as press the pedal then bottom out early making me think it was the master.

No stopping power and super hard pedal.
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Old 04-03-2012
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You may need to bleed the master cylinder
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