1995 Plymouth Voyager 6 cyl Two Wheel Drive Automatic 140000 miles
I have brakes but the pedal goes to the floor & it takes a long time to stop. I noticed it coming on slowly over a few weeks until my brake lights eventually stayed on. Initially I could pump the brakes back up until they had pressure & light went off, but the next time I braked the pressure was gone & to the floor again. MasterCylinder fluid level is good & never been too low.
no visible leaks detected so I took it to BRAKE CHECK. They said NO wheel cylinder/caliper leaks & they tested the MCylinder by putting clamps on the hoses & claiming it was good. They determined it was power booster, but did NO vacuum test. They tried to sell me a loaded booster (w/ MC) for $275 until I called them on it.
bought power booster myself ($55). Removed MC & NO active leak behind or into booster altho there is some rust pattern that looks like something may have leaked at one time.
I am not convinced this is what it is. Almost everything I read indicates bad fluid or bad internal MC -which is my hunch. W/ engine off I can pump up pressure to a hard pedal. When started, pedal drops to floor. Vacuum seems good & don't hear any leaks, but when I push on pedal there is is a hissing & sounds like air leaking inside the booster. I'm quite confused at this point.
also when the weather is COLD, I seem to get more pressure/brake back. Anybody help w/ this? Is this a booster or a MC/fluid issue?
Saturday, January 23rd, 2010 AT 12:07 PM