hard brakes, even after new booster pump
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hard brakes, even after new booster pump
Brakes got hard to press, heard brake booster vacum pump was bad, thumb tested it had little suction but couldn't test it to see if it was to specs.Replaced it got about another inch of play out of pedal but still no brakes, whats next? 95 f250 psd w/standard tranny
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In a gas engine, it is usually quiet enough running that you could hear the leak if there is one in the vacuum booster. As for what else it runs, everything in the climate control system in the truck except for the fan obviously. I would pull the vacuum line off the booster, plug it, and start your truck and see if that allows all the climate controls in the truck to now work. That should narrow it down for you. BTW, it's not unheard of that your new vacuum pump could be bad right out of the box.
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Just so we're all on the same page -- it was the PUMP (the belt-driven one) that you replaced, and NOT the BOOSTER (on the firewall), correct? Did you do the thumb test after replacing the pump? Where did you do this test? Right on the vacuum line going into the booster?
There's also that little check valve on the booster, that the vacuum line connects to. If that's failed, you'll have no boost.
There's also that little check valve on the booster, that the vacuum line connects to. If that's failed, you'll have no boost.
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But my brakes work fine. this hose controls the recurc door. So if there is no difference between Max AC and normal AC... this is the problem.
I am betting on the one way valve on the booster...
Richard
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