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Brakes will not pump up

Tiny
TLBECK
  • MEMBER
  • 2001 MITSUBISHI MONTERO
  • 3.5L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 157,000 MILES
Everything was fine until the chirping noise. Quickly found out it was the Accumulator.
Followed instructions exactly like they said. Couldnt get the brakes to pump up. So went ahead and replaced the Accumulator and bleed the lines.
Started engine, listened to the pump come on and about 25 seconds later it shut off. Turned ignition off and brakes will not pump up. No brakes at all.
What do we check now?
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Thursday, July 18th, 2019 AT 6:09 PM

13 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,513 POSTS
Hello,

Its sounds like you got a bad (flat) accumulator. Why did you replace it? The pump shuts off because it has ran its maximum time limit. Can you please shoot a quick video with your phone so we can see what's going on, that would be great. You can upload it here with your response.
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Sunday, July 21st, 2019 AT 3:01 PM
Tiny
TLBECK
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  • 9 POSTS
Well it may take me a few days. But I'll see what I can do. I have the shingles and not doing much right now.
Thank you
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Sunday, July 21st, 2019 AT 6:35 PM
Tiny
TLBECK
  • MEMBER
  • 9 POSTS
Replaced the Accumulator because of the chirping noises under the dash.
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Sunday, July 21st, 2019 AT 6:37 PM
Tiny
KEN L
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Okay, good luck on the shingles and let me know what happens.
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Monday, July 22nd, 2019 AT 10:29 AM
Tiny
TLBECK
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  • 9 POSTS
Will do.
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Monday, July 22nd, 2019 AT 4:28 PM
Tiny
TLBECK
  • MEMBER
  • 9 POSTS
Here is a video. Over the shingles, woohoo.
Video (Click to make bigger)
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Saturday, August 24th, 2019 AT 2:49 PM
Tiny
TLBECK
  • MEMBER
  • 9 POSTS
  • 2001 MITSUBISHI MONTERO
  • 3.5L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 206,000 MILES
Ken is who ask for a video to listen and see the brake system.
We returned the defective accumulator and yesterday received the replacement. It was installed yesterday and the brakes still will not pump up.
Seems like everything is working but pumping the brakes for pressure.
Maybe the attached video will give you an idea of what we need to do. Brake lines have been bled. We even opened the calipers on the rear brakes and let them drip for 15 mins and then did the same on the front, keeping the reservoir full at all times.
Help if you can. Is there a code that needs to be changed or maybe a check valve or something we missed?
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Saturday, August 24th, 2019 AT 6:06 PM (Merged)
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,513 POSTS
Does this car have ABS? if so you will need a scan tool to open the ABS valve while bleeding to remove the air from the system. This guide should help:

https://www.2carpros.com/articles/brake-pedal-goes-to-the-floor

Please run down this guide and report back.
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Monday, August 26th, 2019 AT 12:22 PM
Tiny
TLBECK
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  • 9 POSTS
Thank you will show this to my brother tomorrow. And see what we can do. Will be in touch.
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Monday, August 26th, 2019 AT 9:23 PM
Tiny
KEN L
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Sounds good, please let us know.
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Tuesday, August 27th, 2019 AT 11:11 AM
Tiny
TLBECK
  • MEMBER
  • 9 POSTS
Will do, we have to find a scan thing.
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Tuesday, August 27th, 2019 AT 11:47 AM
Tiny
TLBECK
  • MEMBER
  • 9 POSTS
Wow! Does it have to be a MUT III? If so we are just out of luck. No way could be afford one of those. Any other scan tool that is way way cheaper?
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Wednesday, August 28th, 2019 AT 9:53 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
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Here is one for $228.00 form Amazon:

https://www.amazon.com/gp/product/B075ZLVXHY/ref=as_li_qf_asin_il_tl?ie=UTF8&tag=2carprcom-20&creative=9325&linkCode=as2&creativeASIN=B075ZLVXHY&linkId=9590f51d8f49fa4b6f8a7abe34ae7683

Please report back.
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Thursday, August 29th, 2019 AT 10:47 AM

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