On my 98 F-150, you have to REALLY push hard on brakes to get it to stop, mostly after sitting all night. After that seems to be better. High firm pedal, all brakes are good, back brakes adjusted correctly, nothing sticks or pulls. Was kind of thinking brake booster but maybe thought one of you had a similar problem you solved. Thank you for any input.

Spotty

 

There is a white plastic fitting that connects your vacuum hose to the vacuum brake booster. That fitting is a oneway valve that keeps the booster vacuum at the highest amount. It might be bad and if so then your booster will not work very well and possibily not at all. Might try a new fitting first

 

The boster itself can cause all sorts of "wierd" problems. But like Fasterhorses said...check the fitting(s) first. When my booster went out on my old Bronco, it was pulling the brake pedal down and stopping the truck. I had to drive with my foot under the pedal pulling up just to get it home.

 

Thanks for the replies, I'll try that white check valve thing 1st. I would have never even thought of that, would have just changed the booster.


Thanks again........ Spotty

 

I have the same Problem. My break pedel is very hard to press. I have already changed the booster and IT IS STILL HARD TO PRESS!!! Is there anything else I can check. I own a 1989 f-250 7.3 L ...... Please help.

 

i cant remember to much about those trucks but i think hose are hydraboost brakes. you might need a new pump or your fluid might be low.