1994 f-250 brake issues

FastEddy · Apr 1, 2011

So my pickup is not losing brake fluid, and the pedal feels normal sometimes, but after i get on it the pedal gets limp **** soft. This started happening after i put my spare on when i got a flat, its a 235/75/16 the rest of the tires are 265/75/16. Master cylinder or booster?

zukkev · Apr 1, 2011

Sounds like coincidence it started after replacing the spare......
Classic master cylinder by the sounds of it...

whitetrashfab · Apr 1, 2011

Are your brakes clean and adjusted up? Diesel? check your vacume pump output. We upgrade alot of these trucks at work with the f450 master for a better pedal feel, might be worth looking into if you do have to replace your master.

zukkev · Apr 1, 2011

Dead vacuum pump will be a high, hard pedal, requiring alot of effort to get the rig to stop...but yeah, look into the upgrade; IIRC the 97 F350 M/C's are the ones to use...could be other options out there too.

FastEddy · Apr 1, 2011

Brakes are practically new less than 6 months. I was thinking vaccum pump i know they have problems. im betting master cylinder is there a way to check?

zukkev · Apr 1, 2011

Press the pedal slowly with even pressure, try it a few times if the first time or two doesn't produce a low pedal---if it's good, the pedal height should NOT change.... if it goes to the floor or the engagement positon of the pedal changes drastically between pedal strokes, it's toast...