Front Brakes Locked Up - Dodge Durango Forum and Dodge Dakota Forums
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post #1 of Old 06-30-2007, 06:48 AM Thread Starter
DustyAmerican
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Unhappy Front Brakes Locked Up

I've never seen this before: I just had the front rotors, pads and lines replaced on my 01 Durango (5.9/4x4/ABS) and after three days, both front brakes are locked on. Bleeding the brakes will release the pressure, but only for a short time, then everything locks up again. Fluid just isn't gettign back out of the calipers to the master cylinder. The local mechanic is scratching his head along with me. We've checked all lines for kinks, twists, etc. I'm considering replacing the calipers, but don't want to just replace parts until the whole brake system is new. Has anybody ever seen this before? What's the fix? Thank you in advance!
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post #2 of Old 06-30-2007, 07:16 AM
davensj
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Check and see if there`s an equalizer valve in your line (most cars/trucks have them), sometimes when they press the pistons back in the calirers it will cause valve to jam, and not letting the fluid pass back to the master cyl.
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post #3 of Old 06-30-2007, 07:18 AM
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my 02 cc kota did that but i went a pressed the caliper piston back in and it has been working fine ever since and that was like 3 weeks ago and i have been hard on the brakes and they havent locked up so its worth a shot. if that doesnt work i dont know what to tell u


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post #4 of Old 06-30-2007, 01:36 PM
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check the rear brake adjustent, with new pads up front the will work better thus grab faster and the rear brakes arent taking any of the load. BTW disc or drum rear?
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post #5 of Old 06-30-2007, 03:46 PM
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I had my front left lock up on me...I can't have that be happening to me (as if anyone wants it to) so I just replaced the caliper and line and called it done.

Whatever you do, be sure to flush the brake lines out. You'll need at least a liter of fluid to flush the lines out, I'd go ahead and buy two and flush them real good.

BTW - You should always flush your brake fluid every two years, regardless of mileage because brake fluid is hydro scopic (absorbs water) and the boiling point gets lower over time. Not to mention it help corrode your lines.
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post #6 of Old 07-01-2007, 07:53 AM
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speaking of changing brake fluid i might do my clutch this summer yet


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post #7 of Old 07-03-2007, 05:43 PM Thread Starter
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All...We've tested the Proportional Valve, pulled the calipers, lines and Master Cylinder...and cleaned everything we could find then put it all back together again. After getting the monster from the black lagoon out of the Master Cylinder, things seem to be working. we even checked the booster rod and brake pedal assembly. One more test of the Proportional valve and another complete flush of the system will be the proof. I didn't think the fluid was going to be that black!

Caulk 04...you're right about putting some serious quantities of fluid into it...I'm on my third liter now with more tomorrow. I want nothing but clean and clear fluid out all four brakes before I'm done!

If this works, I'll let you know!
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