Soft Brakes
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Soft Brakes
95 F250 PSD (Brake booster has 500 mi. on it)...The brakes are working, but the pedal is REALLY soft. I think it is a vaccum leak, but I would love to see if anyone has any ideas on how to check and what to do if it is.
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From: Levittown
Originally Posted by tjbeggs
yep vacuum leak will cause a hard pedal. Are the rear brakes adjusted up tight? Any brake work been done lately where there may be air in the system?
Will also add moisture in the system.
A bad master the pedal would fall.
Bill
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Yes the cruise works great and no the brake light is not on. Also I replaced the check valve @ the booster. The pedal will come back up after the brake is released, just not quite as fast as it should. The guy I bought it from said something about the actuator for the damper control under the dash @ the climate control??? I was going to pull each vaccum line from the tree and plug them one at a time to see if that will help, that way if one is bad I'll know which one and I can replace it. I am also going to bleed the brake system asap to see if that changes anything.
Last edited by Smokin&Strokin; Feb 10, 2008 at 10:20 PM.
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Fleet Mechanic
Joined: Aug 2007
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From: The boonies by Dallas OR
Originally Posted by scatgo
Just wondering what would the cruise control have to do with it?
If the warning light is burned out and one of the things that turns the light on is activated, then the only sign will be a non-functional cruse control.
Low fluid, the parking brake, or low vacuum can all trigger the lamp and disable cruise control.
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Post Fiend
Joined: Apr 2004
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From: Silver Lake Dunes, MI
But low vacuum will produce a hard pedal. Low/no vacuum=no power brakes. So can assure you that if your pedal is soft you do not have a vacuum issue. You either have a bad master cylinder, air in the system, moisture in the system, rear brakes out of adjustment, a leak, or a bad RABS valve.