Brake booster

Tiny
SANDMAN6672
  • MEMBER
  • 1999 DODGE CARAVAN
  • 3.3L
  • V6
  • 2WD
  • AUTOMATIC
  • 101,000 MILES
I drove my van a bit to long before I changed the front pads and rotors due to failing health and surgeries. I got in my van and when I tried to stop at the end of my drive way the brakes failed to stop the van. My son stepped up and changed the rotors and pads for me. He noticed on the passenger side the caliper was leaking and so we replaced the caliper. We bought a Mightyvac bleeder gun and tried to bleed the fluid from the new passenger caliper. We are not getting any fluid to come out of the new caliper. We plan on bleeding the whole system next. The brake pedal also just goes straight to the ground. My question is, could my master cylinder or brake booster be bad because I ran my pads down to low?
Monday, September 18th, 2017 AT 12:05 PM

3 Replies

Tiny
MIKE H R
  • MECHANIC
  • 3,094 POSTS
I doubt it. Sounds like air in the system. When bleeding the brakes make sure the brake reservoir is full all the time. The way I used to do it is one wheel at a time. Have someone pump the pedal three or more times then hold down even if it goes to floor and open bleeder valve on caliper. You may have to do it a few times before brake fluid comes out. Once it does close bleeder and move to next wheel.
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Monday, September 18th, 2017 AT 12:17 PM
Tiny
SANDMAN6672
  • MEMBER
  • 1 POST
Ok so I bled the brakes. The front right no fluid even came out of the banjo fitting. Before I changed the caliper I checked it and it flowed fine. I checked the banjo fitting and it is not clogged. The drivers side rear no fluid will come out of it. Any help is much appreciated!
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Tuesday, September 19th, 2017 AT 9:49 PM
Tiny
MIKE H R
  • MECHANIC
  • 3,094 POSTS
Start at the beginning, Bleed the brake resevoir, Do it the same as you would a brakes if air got into that you would have a problem bleeding the brakes. Then do the rear brakes farthest from the brake resevoir. Then move to the front. Make sure the bleeder valve is closed before the person in the car lets the pedal up. If not then air will bleed back into the line. Check the lines if the rubber is frayed or worn. There could be the problem.
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Wednesday, September 20th, 2017 AT 12:02 PM

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