Bake Pedal leaks down and pumps up
#12
#13
No end to this problem, and now $700 into it. Have six new braided stainless brake hoses and careful bleeding using the computer and still cannot get satisfactory panic stop. There is a hesitation for a second or so when you hit the pedal hard, the vehicle slows a bit during this initial period, then a second phase initiates, and the rate of descent increases significantly, but it does not provide what could be described as a panic stop. Sometimes you can just feel the ABS kick in, but not the usual shudder provided on other makes and models. And not for a few seconds after you hit the pedal. On every other vehicle I have owned, when you hit the brakes in a panic stop, the ABS kicks in immediately and you get the best stop that vehicle, tire and road condition will allow. The service manager tells me this is as good as it gets with a Discovery ll. Mushy pedal and delayed panic stops. If that is so, then they were sold with a serious safety flaw. I am not yet convinced this is the case. Perhaps it is the master cylinder all along? What should my next large expenditure be in this quest?
#14
#15
I have gone through this as well since I owned my D2 for 5 yrs now, and have pretty much decided that is the best the D2 will do. I replaced pads, rotors, upgraded to stainless brake hoses, full Synthetic Dot 4 brake replace and bleed. I have repaired the 3 Amigo problem on my ABS system and it now works in regard to ABS, TC and HDC. The brakes though tend to work more like older cars I drove when I was young having to pump the brakes rather than like other ABS systems I have used. First push is to pump, and then second gives me good stop.
I need to test the Master Cylinder like noted above, so will put that on my list to do here soon.
I need to test the Master Cylinder like noted above, so will put that on my list to do here soon.
#16
Any update with this? I have a similar problem where I initally depress the brake pedal, the vehicle slowws but the pedal feels spongy. If i quickly release and depress again they get nice and tight/responsive.
I just ordered a set of stainless braded to replace my 13 yr old lines.
I just ordered a set of stainless braded to replace my 13 yr old lines.
https://landroverforums.com/forum/di...e-fluid-23074/
It fixed my spongy pedal.
#17
As for the OP pprussell, what else could it be? Sounds like you've taken every other step? That is definitely not how it should act, and it is not normal or "as good as it gets". I had the double pump issue to get a good strong pedal which was fixed with proper bleeding. My 2001 still has the OEM brake lines. I admit it's not as strong as other newer suv's I have driven but, it's certainly sufficient for what you describe as a panic stop, and that's without any noticeable latency when I press the pedal hard.
#18
Which order did you bleed the brakes that gave you these good results? RAVE instructs for LHD to do Pass.Front - DriverFront-Pass.Rear-DriverRear order which I followed, while other people say another order to use going back to front. Having no success, I then did a gravity bleed on each wheel one at a time for an 15-20 minutes per wheel. Drip .. Drip .. Drip ... Still spongy pedal on first push.
Last edited by Rover_Hokie; 05-07-2013 at 02:17 AM.
#19
#20
Which order did you bleed the brakes that gave you these good results? RAVE instructs for LHD to do Pass.Front - DriverFront-Pass.Rear-DriverRear order which I followed, while other people say another order to use going back to front. Having no success, I then did a gravity bleed on each wheel one at a time for an 15-20 minutes per wheel. Drip .. Drip .. Drip ... Still spongy pedal on first push.