Hello,
My Land Rover 110 has a problem with the brakes.
When I press the brake pedal, it goes down to the floor. If I pump the pedal one or two times, then the brakes function normally. After about 30 seconds, it is back to zero. It seems like pressure or a vacuum is somehow being lost.
There is no leak with the brake lines or calipers. I do not believe this is being caused by the master cylinder as this has been replaced recently.
Does anyone have any suggestions as to what would be causing this?
Would this be caused by a problem with the vacuum booster, or the seal between the master cylinder and the booster?
Any help would be greatly appreciated.
Thank you.
2007-06-27 14:08:19 · 7 answers · asked by zitima 2 in Cars & Transportation ➔ Maintenance & Repairs
Hi!
Thanks for all the replies!
I've bled the system three times, so I don't think this is the problem. I've pumped several pints through the system, and I'm using a check valve.
If I pump the pedal and then hold it down, it does NOT slowly depress.
What else could be causing this?
Regards,
2007-06-27 14:42:53 · update #1
Forgot to mention that I had this problem before I replaced the cylinder. The new cylinder did not fix the problem.
2007-06-27 14:44:59 · update #2
If the master cylinder is okay, then probably the brakes need bleeding. Air bubbles can cause a mushy brake condition, with pumping causing the pedal to harden and rise.
http://www.ehow.com/how_1873_diagnose-brake-problem.html
2007-06-27 14:16:55 · answer #1 · answered by Fred C 7 · 0⤊ 0⤋
It could be that you are low on fluid. Or maybe the new master cyvlinder is bad(it happens). It sounds like though there is air in the brake lines. It could also be the booster. The seal shouldn,t cause it to leak, but I believe you probably have air in the brake line or the booster is bleeding off. Could it be the lines were not bled properly?
2007-06-27 21:21:47 · answer #2 · answered by c99challenger 3 · 0⤊ 0⤋
Misadjusted rear brake shoes loose wheel bearings all can cause to much caliper or brake shoe movement for one push to take up. Check the axles for play and remove the rear brake drums and inspect the self adjusters then manually adjust so the rear shoes drag the drums. Another diagnostic is pull up on the parking brake lever or push the pedal and see if the service brake stays up near normal the cable took the slack out of the rear brake.
2007-06-27 21:25:17 · answer #3 · answered by John Paul 7 · 0⤊ 0⤋
you dont say this started after having the new master fitted. if so it could be that the brakes were bleed in the wrong order.or it maybe the 110 has a valve in the brake system that control the amount of preesure to each wheel, which needs to be done at a shop
2007-06-27 21:36:35 · answer #4 · answered by MARK C 1 · 0⤊ 0⤋
it sounds to me likethe fluid is bleeding past the plunger back into the resevoir. if you pump it up and hold pressure on it does it slowly go down. if so best solution is replace master cylinder. make sure you bleed all the air out of the lines afterwards. im almost positive the proplem is what im describing. ive had it happen to me before.
2007-06-27 21:21:02 · answer #5 · answered by SSGP 3 · 0⤊ 0⤋
sounds like someone didnt bleed the master cylinder correctly,you might also wanna check for a portioning valve hope it helps
2007-06-27 23:51:29 · answer #6 · answered by Adam M 2 · 0⤊ 0⤋
does your vehicle have abs or anti skid? you might also
check if there is a certain procedure to bleeding the brakes as this will make a difference-good luck!
2007-06-27 23:28:34 · answer #7 · answered by patrick r 2 · 0⤊ 0⤋