brake problem - Ford Powerstroke Diesel Forum
User Tag List

LinkBack Thread Tools Display Modes
post #1 of 3 Old 01-29-2013, 11:28 AM Thread Starter
rodgerdathug's Avatar
Join Date: Jan 2013
Posts: 69
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 11
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
brake problem

So this just started out of nowhere. First driving g brake seem fine when I apply them it get real hard and I almost have to pulsate to get it to slow down a d slow speed scared if I have to panic stop I tried bleed the brakes and same thing I have no clue any hints or idea to help thanks oh and it is a standard cab manual transmission thanks again
rodgerdathug is offline  
Sponsored Links
post #2 of 3 Old 01-29-2013, 12:30 PM
BANNED by Kris
BigFuel's Avatar
Join Date: Oct 2011
Location: Pasadena, CA
Posts: 6,140
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 7 Post(s)
Thanks: 48
Thanked 111 Times in 103 Posts
Feedback Score: 0 reviews
Hard brakes go to bad vacuum system or bad diaphragm in the booster. With the motor running pull off the soft line to the booster and see if there is a good suction sound. Then put your thumb over it and see if it has good neg. pressure. if it does then go to the booster. If it doesn't go backward from the booster line to the vacuum block on the fire wall and pull the large line that goes to the vacuum pump on the front of the motor do the same test as above.

+ Matt - Star Tiger +
-Bean's: 160/100 (FF Injectors), 2/ 6-POS chips (TW & Beans tunes), Overboost controller, E-Fuel
-BANKs: downpipe, full exhaust, gauges, test pipes, intercooler
-Irate: T-4 kit, IC pipes, 3" Replacement Plenums, BASB Turbo
-Mag-Hytec trans. and pumpkin covers
-6637, CCV, IDM, 6.0 Fan, 49-Federal PCM swap, MAP line Mod
-370 Amp alt., 40k trans cooler, SRP1.1
-twin on-board air w/ 10 gal. tank

Re-pinning '97 Cali PCM to Federal
BigFuel is offline  
post #3 of 3 Old 01-29-2013, 01:15 PM Fanatic
pittdiesel's Avatar
Join Date: Feb 2009
Posts: 131
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
brake problem

Just got done fixing this problem. It was my vacuum pump. Second time I changed mine past couple years. Those are the exact symptoms I had. Fixed instantly. As long as your pedal eventually come back up and doesn't stay stuck to the it's likely not the booster. Let me know if you need any help. Got mine off eBay for $30. Expected it to last for few thousand. I barely drive it so don't care but still going strong! The expensive one went too, so I figured might as well do the cheaper one if the expensive one fails every few years.

Sent from App
pittdiesel is offline  
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome