Volvo S70 Made from 1998 to 2000, this sporty model replaced the 850 sedan and instantly became a hit.

Do I need a new Brake Master Cylinder?

  #1  
Old 10-27-2016, 02:39 AM
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Default Do I need a new Brake Master Cylinder?

I bled the brakes, brake pedal is stiffer for a few days, goes back to being loose again after a couple days. It's definitely losing pressure. Checked all the lines, etc. 99 S70 with 148k. Most likely original master cylinder.
 
  #2  
Old 10-28-2016, 07:53 AM
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Sounds more like the brake booster and not the master cylinder to me.............Are you losing brake fluid? I'd check all the lines and calipers first.
 
  #3  
Old 10-28-2016, 05:56 PM
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I have not lost any fluid. I just replaced the ABS module due to the original failing and causing me to intermittently lose my speedometer though. Brakes feel a little stiffer, but I want a rock hard brake pedal. It may just all be in my head honestly. Although, the master cylinder may be worn out.
 
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