ptt Posted January 5, 2019 Share Posted January 5, 2019 This was a first. Cold (10 degree F) morning and 1990 Coupe (182K) started just fine. I noticed the brake pedal was hard and red BRAKE light stayed on after the DASH LIGHT SHOW was done. I don't set the parking brake ever during single digit weather but pulled up on the parking brake pedal anyway in case I had inadvertently hit it somehow. Red brake light remained on and brake pedal remained hard constantly all the way to engine warm up. Finally the pedal started working normally before I drove out of the driveway. As stated this has never happened before. Not even in past winter single digit overnight weather. I did notice the fluid appeared dark so would a flush be recommended? Thanks all. Link to comment Share on other sites More sharing options...
Ronnie Posted January 5, 2019 Share Posted January 5, 2019 35 minutes ago, ptt said: I did notice the fluid appeared dark so would a flush be recommended? Absolutely! Here's how to do it properly: How To Flush & Bleed Brakes Link to comment Share on other sites More sharing options...
Barney Eaton Posted January 5, 2019 Share Posted January 5, 2019 The problem might be associated to old fluid with a high content of moisture which could freeze, or cause something to stick in cold weather. This might be a warning that the fluid needs to be changed ASAP Link to comment Share on other sites More sharing options...
harry yarnell Posted January 5, 2019 Share Posted January 5, 2019 It could also be a failed pump. Link to comment Share on other sites More sharing options...
DAVES89 Posted January 5, 2019 Share Posted January 5, 2019 As the started to work and the fluid is dark, I would start with changing the fluid. If the failure you to run happens again I would consider a known good switch, then a pump motor. I have both the pump and motor [comes with a working switch, accumulator will come too, but is weak] if it comes to that. PM me if interested. Link to comment Share on other sites More sharing options...
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