Brake pedal goes to the ground b

Tiny
MAXIMA30
  • MEMBER
  • 2003 NISSAN MAXIMA
  • 3.5L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 160,000 MILES
I almost got in an accident backing out of my driveway the other day. For some reason my brake pedal went to the floor and didn't stop. Thankfully I used my ebrake! But today I replaced all my brake pads, replaced a leaky rear passenger caliper, bleed all 4 brakes. And still couldn't get pressure to build up on my brake. It would feel ok for a second or two but with constant pressure it goes all the way to the floor with no normal feeling. It just goes from spongy to a deflated pedal going to the floor. Would this be a master cylinder issue or the brake booster? Or neither? Please help. I'v recently got laid off due to company downsizing and I need my car to find a new job! Thank you all very much.
Tuesday, March 24th, 2015 AT 9:54 PM

2 Replies

Tiny
CATAFINA
  • MECHANIC
  • 167 POSTS
Replace the master cylinder its leaking internally
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Tuesday, March 24th, 2015 AT 11:20 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Old be a master cyl problem but I tmay need bleeding with a scanner to keep the abs valves open. I'd go for the master cyl first however.
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Wednesday, March 25th, 2015 AT 7:30 AM

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