Major brake problem - Land Rover Forums - Land Rover Enthusiast Forum

Discovery II Talk about the Land Rover Discovery II within.

Major brake problem

Reply

 
 
 
  #1  
Old 07-11-2018, 04:58 PM
Member
Thread Starter
Join Date: Dec 2017
Location: Indiana
Posts: 84
Thanked 2 Times in 2 Posts
Default Major brake problem

Took the 04 with 122k miles on it to get pressure bled. Truck came back 10x worse and had to drive it through town and back home using the ebrake. He must have screwed up.

Air is definitely in the ABS and there is a brand new MC on it. I tried bleeding the brakes the old fashioned way (two man job, tighten when pedal is pressed to the floor) and nothing comes out of the rear lines and only sparse amounts of fluid come out (after 10-15 pumps in sets of 4) from the front lines.

I have replaced all calipers and fluid is clear. Any suggestions on how to tackle this?

Thanks guys
 
Reply With Quote
  #2  
Old 07-11-2018, 05:03 PM
Senior Member
Join Date: Jun 2014
Location: Central NJ
Posts: 287
Thanked 7 Times in 6 Posts
Default

Did you fire the ABS?
you wont get all the air out without getting the abs to activate.
 
Reply With Quote
  #3  
Old 07-11-2018, 05:08 PM
Member
Thread Starter
Join Date: Dec 2017
Location: Indiana
Posts: 84
Thanked 2 Times in 2 Posts
Default

No, but I'm getting a delphi ds-150 in the mail soon. I plan on using it immediately. For now, I just tried conventional brake bleeding and made basically zero progress. Booster, MC, and lines are all fine so it can't be any of that. It has to be the air in the system or dirt but I can't figure out why it's not even pushing hardly any brake fluid out...
 
Reply With Quote
  #4  
Old 07-11-2018, 05:45 PM
Senior Member
Join Date: Apr 2016
Location: Chattanooga TN
Posts: 271
Thanked 32 Times in 30 Posts
Default

Originally Posted by dasherman View Post
and nothing comes out of the rear lines and only sparse amounts of fluid come out (after 10-15 pumps in sets of 4) from the front lines.

Thanks guys
That doesn't sound good. Even with air in the ABS unit, you should be able to easily push fluid out of the bleeder screws. You say the MC is new, did your guy replace it during this job?
 
Reply With Quote
  #5  
Old 07-11-2018, 06:05 PM
Member
Thread Starter
Join Date: Dec 2017
Location: Indiana
Posts: 84
Thanked 2 Times in 2 Posts
Default

Yes he replaced it. Brake pedal was not good but it was not non-existent until after he 1. power bled, 2. new MC, and 3. did a bunch of **** i don't know, such as cracking open the ABS lines and trying to manually bleed it (without my permission or knowledge of him doing so). Now it is completely gone.

I just tried to bleed the front driver's side and now no fluid comes out at all.

Something is seriously wrong and I don't understand what it is.
 
Reply With Quote
  #6  
Old 07-11-2018, 08:23 PM
Senior Member
Join Date: Apr 2016
Location: Chattanooga TN
Posts: 271
Thanked 32 Times in 30 Posts
Default

IDK, never had the problems you describe but sounds like the ABS may be FUBAR. Weird that you can’t get any fluid through the lines. Not being a smart ***, but the reservoir is full, yes?
 
Reply With Quote
  #7  
Old 07-11-2018, 08:45 PM
Member
Thread Starter
Join Date: Dec 2017
Location: Indiana
Posts: 84
Thanked 2 Times in 2 Posts
Default

yes it is lol
 
Reply With Quote
  #8  
Old 07-11-2018, 09:57 PM
Senior Member
Join Date: May 2011
Location: toronto, canada
Posts: 601
Thanks: 0
Thanked 22 Times in 21 Posts
Default

What kinda shop would let a truck out of their shop in this condition ??
 
Reply With Quote
  #9  
Old 07-12-2018, 12:46 AM
Senior Member
Join Date: Sep 2017
Location: Mission BC Canada
Posts: 513
Thanked 68 Times in 59 Posts
Default

This not helpful but there is something seriously wrong, even with ABS disabled and the ignition off you should get fluid out. Brakes are not rocket science, they are basically just a pump.

My bet is the master cylinder is pooched - it is the place to start.

Removing lines from the modulator is not bad to get out just take your time and be gentle removing and replacing, to avoid cross threading.

It is messy but try removing the brake lines from the Master at the ABS modulator (rear two lines on the Modulator) and pump the pedal (have something to catch the fluid). You should get fluid when the pedal is pumped, my bet is you will not.

If you do get fluid try bleeding only the left front, even with air in there it should get clear pretty quick. But have someone watch your brake fluid, if it is not going down you have the bigger problem.

If this fails check the modulator output lines

Put a bunch rags around the modulator and just crack them open a ways,
one at a time, pump the brakes and fluid should come out.

If not that is a big problem in fact you should have the 3 amigo's lit up, because the modulator would be blocked somehow. Check all your electrical connections to the modulator as well just as a bit of extra insurance.

The other possibility is if he removed lines from the modulator he did not get them the back in right place. Should be impossible but you never know.





I can not believe anyone can screwup replacing a master cylinder on one these it is dirt simple 2 bolts and 2 hard brake lines.
 

Last edited by Richard Gallant; 07-12-2018 at 01:10 AM. Reason: wrong image
Reply With Quote
The Following User Says Thank You to Richard Gallant For This Useful Post:
shanechevelle (07-12-2018)
  #10  
Old 07-12-2018, 07:41 AM
Senior Member
Join Date: Oct 2011
Location: NE PA
Posts: 1,108
Thanked 65 Times in 60 Posts
Default

I agree with the above.

Take the lines off the master and see if you can pump fluid out.

I was going to suggest taking a bleeder out and letting it sit to see if you get any fluid out.
 
Reply With Quote

Thread Tools
Search this Thread
Quick Reply: Major brake problem


Advertising
Featured Sponsors
Vendor Directory

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.