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Old 06-11-2013, 08:23 PM   #1
Dylanjwhall's Avatar
Join Date: Feb 2011
Location: Philadelphia
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smoke from brakes

After driving today I noticed an odd smell and when I came to a stop at the next kight I saw smoke so I pulled over. After inspecting it it looked like it was coming from the brakes. It also seemed to be braking for me like a seized caliper but then a few seconds later it would be acting fine again. Any suggestions on this problem? Also appeared to be a small amount of brake fluid dripping. Then about 5 miles later I blew a brake line right under the drivers seat... that I know how to fix though

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Old 06-11-2013, 08:27 PM   #2
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The brake lines swell on the jeeps and cause the caliper to lock up. Wen that happens u need to replace the lines. The must have swelled so much they r leaking

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Old 06-11-2013, 09:31 PM   #3
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Dang... the one thing I was hoping it wouldnt be. Thanks though
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Old 06-12-2013, 01:48 AM   #4
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Yes. As the rubber in the brake lines begins to break down, it swells and blocks the passage ways. You have lots of pressure behind the pedal when you push down, so engaging the brakes is no problem. The problem occurs when the brake fluid needs to go back to the reservoir. You do not need to replace the whole brake line, simply the rubber sections at the end. You could take this chance to get some stainless ones and make sure you get ones for your lift height. Too short and you could rip them off during full flex and too long and you could get them caught on something. You have one rubber line that goes from the frame to the rear axle as well that you should replace as long as you have the fluid out and all. It will probably need it too.
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Old 06-12-2013, 02:44 AM   #5
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this is the exact same issue I had with my TJ last month, smoke and all.

it was indeed a sticking front brake caliper. took it to my local Jeep dealer and he pulled it apart and showed me how all my front brake hardware was original and in bad shape. I needed rotors, calipers, pads and the soft brake lines. Total cost parts (all Mopar no aftermarket) and labor was about $700.
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