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1997 f350 cab and chassis new upgraded booster new up graded master new calipers and new front rubber lines back brakes r completely blocked off but peddle slowly bleeds to the floor when truck is running when truck is off has firm peddle when truck is running and front lines r blocked has firm peddle as well

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Even though you have a new master cylinder, its sounds like you have a pressure bleed problem in it. The valve inside of it could be slowly letting the pressure by which could be causing all your woes. Take it off and bench bleed it to see if that resolve your issues.

Posted on Nov 18, 2013

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Posted on Jan 02, 2017

  • 57 Answers

SOURCE: 96 ford e350, brake pedal goes to the floor when running

Check for fluid leaks, possibly rear brake cylinders. has anything else been replaced prior to this concern?

Posted on Dec 17, 2008

crayzeetrayn
  • 837 Answers

SOURCE: 1998 FORD F150 XLT 2WD - No Brakes when truck is running

We could have really went round and round for that one .. wouldn't you say .. but hey glad you were able to resolve it and that all is well . .but anyways thanks for using FixYa and we are here to help .. don't hesitate to look us up again .. Crayz

Posted on Mar 24, 2009

  • 68 Answers

SOURCE: brake peddle hits the floor when engine turned on

did you set up the brakes make sure that it is set

Posted on Aug 08, 2009

inspectmycar
  • 233 Answers

SOURCE: how do you bleed the abs unit on a 1997 chevrolet truck

start by bleeding the master cylinder bleed the line closest to the fire wall, then proceed to the right rear wheel, left rear wheel, right front wheel, and then the left front wheel.

Posted on Sep 16, 2009

  • 1 Answer

SOURCE: I Hanve 1996 GMC 1500

did you try a brake booster ?

Posted on Oct 10, 2010

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1992 chevy siverdado 1500 Has new master cylinder,booster,brake calipers bled all lines back to front.drove a round the block The brake are soft with a hissing noise go to the floor some times.


Had the exact same issue with an 04 Cadillac srx. Replaced the booster twice...finally put my old "defective" master cylinder back on and brakes worked fine. Turned out the new master cylinder was bad...even though the symptoms point to the booster. Do check the vacuum hose going to the booster first though. Have seen those go bad and cause weird problems and it's the easiest thing to check first.

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Vacuum line supply dash


Sounds like the brake booster is hanging up and not releasing.

Jan 05, 2014 | 1997 Ford F350 Crew Cab

1 Answer

2000 Chevy Silverado 1500 4x4 New Rotors, Calipers, Pads, and rubber lines, why do all four brakes not release completely and they get hot?


I would think it is something going on with the master cylinder or booster. Even the ABS could be affecting it.

Aug 05, 2012 | Chevrolet Silverado 1500 Cars & Trucks

1 Answer

Brake peadle goes soft at slow speed or when bakking up. Replaced the following, master cylinder. vac pump, complete front and rear brakes. booster.


Sounds like there is air in the brake lines. did you bleed the fluid until it came out clear? Not foamy color.

May 11, 2010 | 1997 Ford F350 Crew Cab

1 Answer

How to determine if 97 Ram 1500 has 2- or 4- 2wheel brakes? Need info for wheel bearing replacement.


on 1997 dodge ram 1500s you can look at the back of the front brakes and if you do have 4wheel abs you will have a brake line and an electrical line running tto the brake caliper. you can also look at the master cylinder, on the right side of the power brake booster (if youre looking from the front of the truck) there will be a metal brake distribution block if it has 2 lines running out of it you have 2 wheel abs...4 lines means 4 wheel abs

Oct 23, 2009 | 1997 Dodge Ram 1500 Club Cab

1 Answer

Abs light on, low brakes when started


this may be a problem wit your master cyl? possible turned seals id say...

Jul 27, 2009 | 1997 Ford F350 Crew Cab

1 Answer

2002 ford f350 deisel brakes pedal feels hard and dosnt stop verry good well driving. Brakes smell like they are burning when I stop. Just replaced front rotors,pads and calipers


You should have a hydraulic brake booster. a common failure item on fords and also would cause your symptom. the burning smell, I would go back and recheck all the brakes. Maybe a problem with the e-brakes, or an issue with the front or rear calipers. Possibly a damaged steel or high pressure brake line. Good luck.

Apr 26, 2009 | 1996 Ford F350 Crew Cab

1 Answer

Brake Pedal not always releasing


Sounds like the calipers are siezed, Suggest a full brake service to free them off.

TL

Jan 24, 2009 | 1997 Ford F350 Crew Cab

1 Answer

No fluid come out when bleeding brakes drivers side front


Brake rubber flex line could be collapsed,,or kinked,,,i suggest loosening of the line at the master cylinder distribution block (this will give you the ability of loosening off one line at a time,,and have some one push the brake pedal down,,if you see fluid at this point then you know it has to be the line or the caliper.
if you get no pressure from the distribution block then its the master cylinders fault

Jan 16, 2009 | 1997 Pontiac Sunfire

1 Answer

Master cylinder won't come off 2001 F350


if its just the master cylinder then there are 2 bolts and the lines and thats it. you might have to tap it a little do to rust or because it sticks over time. if its the master cylinder and the brake booster then you will have to disconnect the booster from the brake pedal on the inside

Nov 30, 2008 | 1997 Ford F350 Crew Cab

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