Wrangler 1999 -- No rear brakes - Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > Community Forums > WF New Member Check In

Join Wrangler Forum Today

Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 02-08-2007, 03:55 PM   #1
Join Date: Feb 2007
Posts: 5
Wrangler 1999 -- No rear brakes

My 1999 Wrangler, 4.0, automatic, standard power brakes (no ABS) has virtually no rear braking force. I have only owned it for about 5,000 miles. Since winter hit, I have found that the rear brakes seem to be completely nonfunctional. I cannot lock up the rear wheels even on the most icy roads. That means that the fronts lock up all the time and the rears keep rolling. On snow, I can hold the car with the front wheels and even at idle the engine will turn one or another of the rears. REALLY DANGEROUS.

The dealer has: Bled everything, replaced the proportioner valve, replaced the master cylinder, replaced a flex hose that links the body and axle portions of the lines, measured the shoes and drums, and put in "different springs", whatever that means. The pedal feel is the same as always, just a little spongy, which I think must be normal, given all the fluid bleeding that has gone on. I am up to $700 and I still cannot drive the car on slick roads... And should not drive it at all.

Any Ideas from anyone?

bkaser is offline   Quote
Old 02-08-2007, 04:25 PM   #2
Join Date: Feb 2007
Location: Wisconsin
Posts: 688
There really is only one other item you did not mention. The master cyc. It may be having difficulties of some sort.


jp'rs_peep'rs is offline   Quote
Old 02-08-2007, 04:55 PM   #3
Join Date: Feb 2007
Posts: 5
The dealer did replace the master cylinder. I am down to wondering whether some prior mechanic put wrong parts in the brakes sometime. Dealer says no, the shoes, etc. are the right ones. The proportioning valve is 90/10, according to Chrysler, but still a hard foot should lock up all wheels on ice.
bkaser is offline   Quote
Old 02-08-2007, 04:59 PM   #4
Join Date: Feb 2007
Posts: 5
By the way, do you know whether this thread is appearing in forums other than the new user group? I'd like as many people as possible to see it. Thx. BAK
bkaser is offline   Quote
Old 02-08-2007, 05:22 PM   #5
delicate %$^&*@ flower

WF Lifetime Member
tiny terror's Avatar
Join Date: Feb 2006
Location: California
Posts: 14,753
bkaser - you can post in any of the forums. This is a sort of welcome area. Post it up in the TJ area and more people will see it.

oh..... and welcome to WF
tiny terror is offline   Quote
Old 02-09-2007, 01:36 AM   #6
Join Date: Jan 2007
Posts: 190
welcome to the board
1990 Jeep Laredo,YJ,stocker,2 inch body lift,4.2,auto,factory rims with 31x10.50x15 tires,black with gray hardtop.

1966 Mustang,289,auto black on black

"I have the right to remain silent" I just don't have the ability.
BILLYWALTON is offline   Quote
Old 02-09-2007, 08:20 AM   #7
Join Date: Nov 2006
Location: Centennial, CO
Posts: 174
Send a message via AIM to COyj
Welcome to the forum.
COyj is offline   Quote
Old 02-09-2007, 01:57 PM   #8
Nuthin's Avatar
Join Date: Feb 2006
Location: Colorado
Posts: 283
Welcome to the Forum!
Tread Lightly - Stay The Trail
92 YJ (mostly stock) 4.0
Wardrobe by Levi, Makeup by Chance, Hairstyle by Jeep Wrangler
Nuthin is offline   Quote
Old 02-09-2007, 09:35 PM   #9
Join Date: Feb 2007
Location: Wisconsin
Posts: 688
sry bkaser,

Need to clean my specs. After re-reading your op, noticed the reference to the master cyc.
Possibly a calapsed/pinched break line?
jp'rs_peep'rs is offline   Quote
Old 02-09-2007, 10:18 PM   #10
Hacks off Parts while Lit
whitebuffalo's Avatar
Join Date: May 2005
Location: The Sandhills of South Texas
Posts: 2,290
did they replace/adjust the shoes? contaminated shoes will have no effective force....
'90 YJ, ford 8.8, SOA, lincoln front, aussie rear, 4.88s, swampers.
whitebuffalo is offline   Quote
Old 02-10-2007, 01:17 PM   #11
Odhinn's Avatar
Join Date: Aug 2006
Posts: 2,147
Welcome to WF.

What about the wheel cylinders. I worked on a chev 1/2 4X4(a long time ago) that had the same problem. Garbage in the rear lines flaked off and plugged both rear cylinders.
Recently returned from the Jeep Dead.
Proud daddy to a New baby Jeep Girl.
Odhinn is offline   Quote
Old 02-12-2007, 07:27 PM   #12
Join Date: Feb 2007
Posts: 5
Wrangler 1999 No rear brakes

The dealer bled out the system, which to me means that the lines are clear. He also replaced flex hose(s) between body and rear axle; says that the wheel cylinders are getting fluid OK. One reason I think fluid is not the problem is that, even if a line were restricted, like pinched, that should only affect one rear wheel, since each wheel has its own line direclty from the proportioning valve. Also, holding the pedal down does not help the rear brakes, even over 20 seconds or so. Once the pedal is down, what matters if static pressure, not flow. If fluid will drain down to the cylinders, there is some flow, so over 20 seconds or so, we should get static pressure even if flow is not 100%.

The dealer did disassemble and measure and adjust the shoes to the drums. He says that the brakes are properly adjusted, shoes within drums. No grease or oil.

I am wondering if this is actually a defect in this model year. Chrysler told the dealer I should live with it, since the factory proportions the braking 90 to front and 10 to rear. On snow, the thing is a handful with all braking in front -- the fronts lock up really easily.

Thanks to all responders for the ideas.

bkaser is offline   Quote
Old 08-29-2007, 01:10 PM   #13
Join Date: Aug 2007
Posts: 1
Not Wrangler (2000 Cherokee Sport) but same exact problem

I'd love to hear an update on this. Here's the details...

~70,000 miles; Auto Trans; 4wd; no leaks

Started off getting new pads and shoes (front disc, rear drum). Found that there were no rear brakes (noticed on wet pavement and tested on gravel) but likely preexisting. Multiple visits to independent shop, got the following new parts: 4 brake cylinders + hoses, rear brake kit, master cylinder, proportioning valve.

No improvement. The shop had no idea, so I took it to a registered Jeep dealership. They spent 6+ hours and all they found was that the rear drums were cut too thin: replaced both. No improvement. All they could suggest was replacing everything again.

The original shop started over with genuine mopar.

Emergency brake functions properly. The peddle is firm - lines bled multiple times with "good output". The system has been replaced in full twice, but still no rear brakes. The peddle is a bit higher than before work began, but the problem may have existed before this work. No squeaks/noises.

hazpoco is offline   Quote
Old 08-29-2007, 02:51 PM   #14
debruins's Avatar
Join Date: Feb 2007
Location: Needham Ma, Rangeley ME in the summer
Posts: 5,578
Send a message via AIM to debruins
i would pm him he may not be on the forum that much idk, if you pm him though he'll get an email notification


debruins is offline   Quote

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
FS: Built 00 Wrangler. Red. 87k miles. 15k (KS) MR.CLIFFORD Classifieds Archive 71 07-27-2008 08:33 PM
FS or Trade 1999 Wrangler TJ sport 5sp Tennessee blackbelt Classifieds Archive 5 04-15-2008 10:21 PM
First Wrangler - 3rd Jeep!!! tritonman WF New Member Check In 10 09-28-2007 09:27 AM
Built 00 wrangler sport. Yellow. Excellent condition. MR.CLIFFORD Classifieds Archive 6 01-15-2007 05:44 PM
The 411 on the New 2006 Jeep Wrangler jeeptales TJ General Discussion Forum 16 08-16-2005 12:46 AM

Download our Mobile App

» Featured Product

All times are GMT -5. The time now is 10:32 AM.

User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2015 DragonByte Technologies Ltd.

Jeep, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC