Hi all,
I lost all pressure in my brake systemon my 01 Discovery (found out later thata family memberput auto trans fluid in the master cylinder while using my car while I was away, he heard it was the same as brake fluid and heard wrong). I flushed the entire system, replaced the master cylinder and bench bleed it prior to installing it. The frontleft and rearright brakes are now working however the front right and rear left are not. I replaced the calipers and re-bleed the entire system for the 10th time at least (gone through about8 quarts of brake fluid) and they are still not working. I cannot find any leaks in the system and have done just about everything I can think of. Has anyone ever seen a problem like this or can give me some other ideas on what to check? I am at a total loss....
Thanks,
Chris

 

I hope he is going to pay for this huge screw up.
You will need to replace the ABS unit, I am nearly totally sure.
You have only run the equivalent of 4 brake flushes thru the system. You might have Rover, using their test book, activate and flush the ABS, this would be the only hope of saving and best, it will only be short term.
Let us know how it turns out.

 

Thanks for the response Mike.. I found a used ABS unit for $150. I may just get it and try it... It'll cost me at least $250to have it towed to the dealer... As far as getting him to pay for it, maybe someday...

 

Be real careful of that used control unit, the going range is more in the line of $800 on the used market,
http://www.roverlandparts.com/index....S&Category=121

 

Well I replaced the ABS unit w/ a used one and am still having the same problem w/ the left rear and front right brake not working. I noticed that when I disconnect the lines comming from the master cylinder to the abs unit if I press the brake the line for the working wheels comes out with much more volume and force than the non working breaks. Is it possible that half the master cylinder is not working? The master cylinder I put in was a used one...

 

Is it possible that I didn't bench bleed the master cylinder correctly?

 

Certainly a possibility, how does the brake pedal fell?

 

The brake pedal feels soft then gets stiff at the end of the stroke. When I try to bleed it very little comes out of the bleeder valve.

 

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