hard brake pedal - Ford Powerstroke Diesel Forum
 
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post #1 of 4 Old 03-15-2012, 06:29 AM Thread Starter
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hard brake pedal

Is it the vacuum pump. Red brake light flashed on dash. No burst lines or leaking brake fluid. Any help appreciated.

97 ford f250 HD supercab xlt longbed
banks intercooler
banks power pack
285 75 16's
3" dp
DIY tymar intake 6637
stancor 586-902
B&W tow n stow
triple pillar gauges:
Banks Dynafact boost gauge
Banks Dynafact egt gauge
ISS Pro trans temp gauge
Hayden 32k transcooler

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post #2 of 4 Old 03-15-2012, 08:28 AM
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vacuum pump...easy fix...just remember to put the bolts in their proper holes before you reinstall the pulley...not a hard job...I did mine last spring...get a vacuum gauge and check for vacuum before you buy a pump just to avoid replacing good parts...hth


edit to add: when running put heater slider to "heat"...if it only has "defrost" then for sure vacuum pump...the blener doors are vacuum actuated...

Last edited by mojoman; 03-15-2012 at 08:51 AM.
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post #3 of 4 Old 03-15-2012, 11:49 AM Thread Starter
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i can hear the diaphragm sputtering while its running

97 ford f250 HD supercab xlt longbed
banks intercooler
banks power pack
285 75 16's
3" dp
DIY tymar intake 6637
stancor 586-902
B&W tow n stow
triple pillar gauges:
Banks Dynafact boost gauge
Banks Dynafact egt gauge
ISS Pro trans temp gauge
Hayden 32k transcooler

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post #4 of 4 Old 03-16-2012, 09:07 AM Thread Starter
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Swapped out the vacuum pump. Brakes are good as new.

97 ford f250 HD supercab xlt longbed
banks intercooler
banks power pack
285 75 16's
3" dp
DIY tymar intake 6637
stancor 586-902
B&W tow n stow
triple pillar gauges:
Banks Dynafact boost gauge
Banks Dynafact egt gauge
ISS Pro trans temp gauge
Hayden 32k transcooler

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