Volvo S80 A performance sedan that offers top notch luxury, outstanding handling and so much more.

Brake pedal pressure

  #1  
Old 07-06-2008, 05:14 AM
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Default Brake pedal pressure

1998 S80T6

brakes work really well and have been maintained, including regrinding front disks.

however, when at a lights or other standing (in drive or neutral), the brake pedal gradually sinks a little way to the floor.

Is this normal or a problem somewhere

 
  #2  
Old 07-06-2008, 06:46 AM
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Default RE: Brake pedal pressure

Master cylinder
 
  #3  
Old 07-06-2008, 08:20 AM
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Default RE: Brake pedal pressure

Have brake pads been replaced lately?
 
  #4  
Old 07-06-2008, 06:17 PM
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Default RE: Brake pedal pressure

pads replaced about 4k ago
 
  #5  
Old 07-06-2008, 10:03 PM
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Default RE: Brake pedal pressure

Has the pedal felt like this since then?
 
  #6  
Old 07-07-2008, 02:37 AM
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Default RE: Brake pedal pressure

To be honest it has been like this for maybe 4 years, which was before the pads replacement and disc grinding.
I haven't gotten round to posting it before now.

As said previously, the performance is fine just didn't expect the pedal to sink at standstill
 
  #7  
Old 07-07-2008, 08:45 AM
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Default RE: Brake pedal pressure

Sounds to me like there may be AIR in the system somewhere..may need bleeding...good luck
 
  #8  
Old 07-07-2008, 06:05 PM
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Default RE: Brake pedal pressure

First thing to try is to find an EMPTY lot of something like that. Then safely hit about 40MPH then try locking up the brakes to activate the ABS and see if the pedal gets better.
If it doesn't then try bleeding the system.
 
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