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Mitsubishi Endeavor This mid-sized sport utility vehicle offers a sporty look and excellent power, as well as a comfortable interior.

brake problem...

  #1  
Old 12-05-2008, 08:48 PM
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Default brake problem...

Has anyone ever had a problem with a brake pedal when the temperature outside is below 15F? The pedal gets hard as a rock and the breaks does not work until I press it for few times.
 
  #2  
Old 12-06-2008, 07:21 AM
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Default RE: brake problem...

probably moisture in the brake booster.... or in the one-way valve on the vacuum supply hose.
Its not completely uncommon. Its not just a mitsubishi issue, either, as that can happen to a LOT of cars.

 
  #3  
Old 12-07-2008, 03:55 PM
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Default RE: brake problem...

thanks for answer Manybrews, I set schedule at dealer.
 
  #4  
Old 01-18-2009, 10:52 PM
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Default RE: brake problem...

After the car taking to the service department at dealer and having the brakes job done (front pads and rotors replaced with bleed braking system) the problem still exists...even better, now the pedal get hard not only after staring the car but also during driving - seems a little dangerous. It happen two times in one day during cold weather. Service department manager says he had never had any experience with such thing. Can somebody help?
 
  #5  
Old 01-19-2009, 03:37 PM
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Default RE: brake problem...

id recommend replacing the vacuum supply hose for the brake booster. Theeres a valve inside the hose that is probably freezing shut, preventing vacuum from applying the brakes. They brakes WILL still work, but you wont have power assist.
as the temp of the car or the ambient air rises, the issue will disappear.

If its not the hose, its the vacuum diaphragm itself. since thats less likely and more expensive, Id start with the hose. Do NOT use any hose.... get the correct one!
 
  #6  
Old 01-20-2009, 08:43 PM
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Default RE: brake problem...

thanks, its a big help, I'll check with teh dealer
 
  #7  
Old 02-10-2009, 07:06 PM
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Default RE: brake problem...

After visiting different mitsubishi dealer and replacing brake booster, the brakes work great
 
  #8  
Old 03-07-2019, 04:01 PM
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Default Brake booster valve obsolete

Originally Posted by Manybrews View Post
id recommend replacing the vacuum supply hose for the brake booster. Theeres a valve inside the hose that is probably freezing shut, preventing vacuum from applying the brakes. They brakes WILL still work, but you wont have power assist.
as the temp of the car or the ambient air rises, the issue will disappear.

If its not the hose, its the vacuum diaphragm itself. since thats less likely and more expensive, Id start with the hose. Do NOT use any hose.... get the correct one!
I've read that it can be home made, but the brake booster valve hose is obsolete and will not be available after market either. Any ideas?
 
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