1998 Plymouth Breeze Brake pedal soft

Tiny
DANO_61
  • MEMBER
  • 1998 PLYMOUTH BREEZE
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 168 MILES
Hi

My brake pedal all of sudden started feeling soft yesterday, I headed home right away, I was close to home, by the time I got home the pedal was going to the floor

I checked the fluid level and it was low, I topped it up
but its still the same, when the car is running and I pump the pedal it would usually get harder but now it has no resistance.

When the car is off the pressure comes back and its back to normal.
Do you
have the same problem?
Yes
No
Sunday, March 14th, 2010 AT 9:39 AM

7 Replies

Tiny
MERLIN2021
  • EXPERT
You will need to inspect for leaks at all wheels, lines and the master cylinder. You did use DOT 3 brake fluid right? If the fluid leaks out have a friend pump the pedal while you check for leaks.
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Sunday, March 14th, 2010 AT 10:06 AM
Tiny
DANO_61
  • MEMBER
Yes I used DOT 3, I checked the levels again and its full so doubt its a leak
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Sunday, March 14th, 2010 AT 10:26 AM
Tiny
MERLIN2021
  • EXPERT
If no leaks found, the likely cause is the master cylinder. Internal leak or rubber plunger seals.
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+1
Sunday, March 14th, 2010 AT 11:17 AM
Tiny
DANO_61
  • MEMBER
Yeah I figured that, thanks a ton Merlin
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Sunday, March 14th, 2010 AT 11:20 AM
Tiny
MERLIN2021
  • EXPERT
Your welcome. Let us know if you need anything else, and don't forget to bench bleed the new master!
You can bleed it. Bench bleed the master by getting brass plugs and screw them into the two ports, then pump the master until you cant move the piston any more. Attach the lines, Have an aide press and hold the pedal crack the lines and retighten, repeat this till all air is removed at the lines, Don't let the master run dry, bleed rear cylinders by opening the bleeders and wait until the fluid dripps out. Close bleeders. Make sure the rears are properly adjusted, then test the pedal hieght
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Sunday, March 14th, 2010 AT 11:37 AM
Tiny
DANO_61
  • MEMBER
Hey Merlin

I am not comfortable working on brakes I will take it to a professional, know your limitations my Dad always said lol
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Sunday, March 14th, 2010 AT 11:42 AM
Tiny
MERLIN2021
  • EXPERT
Fair enough!
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Sunday, March 14th, 2010 AT 11:45 AM

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