2002 Toyota Sienna brake issue

Asked by GuruDTD4N Jul 13, 2019 at 10:27 AM about the 2002 Toyota Sienna CE

Question type: Maintenance & Repair

Hello, I have a 2002 Toyota Sienna with
170,000 miles. Recently was having issues
with my breaks pedal going to the floor. I
could see that there was a brake line that
needed to be repaired due to a break in the
line. I repaired the brake line that was broken
but the car was still doing it. I then decided
to replace the master cylinder after checking
all the other break lines. Now the breaks are
extremely hard! I’m having the complete
opposite problem now. Can someone please
give me some advise? Does the power boost
need to be replaced?

2 Answers
101,515

KenF answered 4 years ago

Check the brake booster, the booster vacuum hose, and check valve. BTW, did you BENCH BLEED the new Master Cylinder?

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