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F350 brake problem

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Old Jan 2, 2007 | 10:17 AM
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F350 brake problem

I have a 1995 F350 dually. Pedel is soft and will go to the floor with continued pressure. Been this way about 2 yrs but now getting worse sometimes doesn't want to stop at all. never can lock them up for a panic stop. Had the brake system gone through 3 times in last 2 yrs. 2 master cylinders, 2 splitter valves, pads, shoes, cylinders, still the same. The shop claimed they talked to Ford and no ideas. Lots of bucks in this and no change. Any suggestions?
 
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Old Jan 2, 2007 | 12:47 PM
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Does it have ABS?
Is it leaking/losing brake fluid?
 

Last edited by mrminvt; Jan 2, 2007 at 12:51 PM.
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Old Jan 2, 2007 | 01:15 PM
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That is a classic symptom of a bad master cylinder. You can get bad ones directly from the parts store.

If you are not leaking fluid somewhere, get your MC replaced.

Also, get a new mechanic. The shop doing your brake work are either cheating you or are total idiots.
 
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Old Jan 3, 2007 | 09:49 AM
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Yes it has ABS, not leaking or loosing fluid anywhere,and installed 2 new master cylinders same day. I'm starting to sense the idiot thing! They want me to bring it back so they can experiment some more. No way, thats why I'm asking you all!
 
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Old Jan 14, 2007 | 03:58 AM
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2 wheel or 4 wheel ABS? I ask because the 2 wheel ABS has an accumulator which is prone to failing in just this way. There is a TSB from Ford on this one, I believe.
 
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Old Jan 26, 2007 | 10:41 AM
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thanks
further research tells me that there is a sensor in the rear end,an isolation valve,a dump valve and an accumulator. Is there any way that all this could be unpluged and work as just an old fashioned braking system.
 
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Old Jan 26, 2007 | 12:13 PM
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No doubt. Should be fairly simple. Did you research the TSB that Davhut mentioned? Have you had Ford run an Oasis on your VIN# to check for open recalls and TSB's?

I highly recommend doing this (I do this with any/every vehicle I work on.) You would be amazed the recalls still open on older vehicles. Last year, a 1990 4Runner I bought at auction still had open recall on the head gasket. Nothing like free repairs! I also had 2 open recalls on my much older 88 GMC truck - new set of front rotors and a new trani dipstick tube!
 
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Old Jan 28, 2007 | 01:44 PM
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I checked tsb's for 1995 f350 and didn't find any for this specific problem. maybe i missed it. I will have ford check also.
Thanks.
 
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