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Old 04-01-2012, 09:49 PM   #1
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Need MAJOR Help Jeep Stops On It's Own

I'm new on here but not new to jeeps, this is my first YJ and I bought it used....really.....used. It's a 94, 4 inch lift...33's, 4.0, 5 speed. I just put in a new transmission and it just had all new brakes done with an alignment. Once I drive it for about 20 miles and everything heats up...when I come to a stop sign/light it feels like it is stopping on it's own. I literally don't have to hit the breaks....it stops like the brakes are being applied. It did this before I had the brakes done, so I was hoping a brake job would clean it up. When they replaced the brakes the rear were shot so I got all new hardware installed. I have no idea what could be doing this, any ideas??? It does not do it when I first start out, the jeep drives just fine and acts normal......Also when this does start to happen and I do hit the brakes it wants to pull really hard to one side or the other.

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Old 04-01-2012, 10:05 PM   #2
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Sounds like you have a caliper that's sticking and/or a bad brake hose. Did the PO extend the brake lines when they did the lift? That's where I would start looking. New calipers and hoses are cheap enough to just replace them to be sure.

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Old 04-02-2012, 01:24 PM   #3
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I don't think it has extended brake lines, but the lines were just flushed......what's the best way to see if a caliper is sticking? I'm going to assume the front brakes were checked, pretty sure they were, but maybe I'll take it back, perhaps the shop did something wrong.
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Old 04-02-2012, 01:32 PM   #4
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to check the caliper, place wheel chocks or bricks behind a front and rear tire, both sides of the tire so it won't roll, and place the transmission in neutral. Jack up (on the axle) one end at a time-and try spinning the wheel. If a caliper is sticking you'll know it right off-that wheel will be very hard to spin or it will stop immediately if you spin it and let go. Try both of the rear wheels for example, then take it off the jack and move it to the front and do the same. It sounds for sure like you have a caliper sticking...or, if the brake line extensions were not put on, you may have a collapsed brake line from being 'over extended' at some point on a run-when the wheel was flexed fully and pulled on a short brake line, causing that line to collapse. That prevents the brake fluid from flowing 'back' and releasing the pressure on the line. Ask me how I know...
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Old 04-02-2012, 01:57 PM   #5
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could be the slack adjuster is to tight on the rear drums.....or possibly the ebrake cable in a bind?
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Old 04-02-2012, 11:51 PM   #6
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Check and make sure the brake pads where not put on the wrong sides. There is a inner and out pad, if the outer pad is on the inside it will bind cuase heat and then hang up.

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