Brake Master Cylinder

WareCreek · 02-22-2005, 11:43 AM

Got 130kmi and it appears that my brake master cylinder is going out. When sitting at a red light and holding the brakes the pedal fades and I begin to roll. I can pump it back up and the pedal is hard again for a little bit. Also when coming to a quick or hard stop, the pedal fades. I am going to bleed it tonight just make sure that there is no air causing this, but I am afraid that it is the master cylinder. Opinions or ideas are more than welcome.

Thanks.
Donnie

ewood · 02-22-2005, 12:58 PM

I would bleed and check all of your lines to make sure there is no damage to the system. And then if it still is soft I guess I would change the master out. I had brake problems for a while and I couldn't really figure it out, so I just finally replaced the cylinder, after 95K, and all has worked well since. Easy job and it's cheep with the core charge. Good luck. Maybe take a look at the calipers as well for any signs of extreme wear around the dust boots.

atwinda · 02-22-2005, 12:59 PM

Quote:

Originally Posted by WareCreek

Got 130kmi and it appears that my brake master cylinder is going out. When sitting at a red light and holding the brakes the pedal fades and I begin to roll. I can pump it back up and the pedal is hard again for a little bit. Also when coming to a quick or hard stop, the pedal fades. I am going to bleed it tonight just make sure that there is no air causing this, but I am afraid that it is the master cylinder. Opinions or ideas are more than welcome.

Thanks.
Donnie

Check to make sure there is no leak in the brake booster line.

WareCreek · 02-22-2005, 02:13 PM

Thanks for the info. Does anyone have a diagram of the brake system that will help to identify all of the parts? I am fairly mechanically inclined, but new to brakes.

Shakerhood · 02-22-2005, 11:15 PM

The first car I owned did that at first and then it got to the point where I had no pedal at all and it was the M/C.

02-22-2005, 11:43 AM	#1
WareCreek Newbie Join Date: Dec 2004 Location: Lithia, FL Posts: 13	Brake Master Cylinder Got 130kmi and it appears that my brake master cylinder is going out. When sitting at a red light and holding the brakes the pedal fades and I begin to roll. I can pump it back up and the pedal is hard again for a little bit. Also when coming to a quick or hard stop, the pedal fades. I am going to bleed it tonight just make sure that there is no air causing this, but I am afraid that it is the master cylinder. Opinions or ideas are more than welcome. Thanks. Donnie

02-22-2005, 12:58 PM	#2
ewood Senior Member Join Date: Dec 2004 Location: SD Posts: 104	I would bleed and check all of your lines to make sure there is no damage to the system. And then if it still is soft I guess I would change the master out. I had brake problems for a while and I couldn't really figure it out, so I just finally replaced the cylinder, after 95K, and all has worked well since. Easy job and it's cheep with the core charge. Good luck. Maybe take a look at the calipers as well for any signs of extreme wear around the dust boots. __________________ ewood '99 V6 4X4 extracab

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02-22-2005, 02:13 PM	#4
WareCreek Newbie Join Date: Dec 2004 Location: Lithia, FL Posts: 13	Thanks for the info. Does anyone have a diagram of the brake system that will help to identify all of the parts? I am fairly mechanically inclined, but new to brakes.

02-22-2005, 11:15 PM	#5
Shakerhood Veteran Member Join Date: Dec 2004 Location: Ohio Posts: 1,911	The first car I owned did that at first and then it got to the point where I had no pedal at all and it was the M/C.