Brakes are spongy

JOHN EAKINS

MEMBER
2006 FORD E-SERIES VAN
4.8L
V8
2WD
AUTOMATIC
233,000 MILES

Have replaced booster, master cylinder, pump, lines, calipers and all pads and rotors are new. All parts were from ford, brakes bled multiple times, cylinder was bench bled properly. Still brakes are spongy, cylinder was replaced two times, both from Ford with no change in performance.

Sunday, July 16th, 2017 AT 8:50 PM

7 Replies

CARADIODOC

MECHANIC
34,330 POSTS

You listed "pump", so I am assuming you have anti-lock brakes. The hydraulic controller on many models needs to be bled with a scanner. That will tell the ABS computer to open a pair of valves so air can be bled out of those chambers.

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Sunday, July 16th, 2017 AT 9:27 PM

JOHN EAKINS

MEMBER
19 POSTS

The pump was replaced at the dealership, so I am assuming they did it correctly.

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Sunday, July 16th, 2017 AT 9:45 PM

CARADIODOC

MECHANIC
34,330 POSTS

If they did that to solve the low brake pedal, what was their reaction to giving the vehicle back without solving the problem?

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Sunday, July 16th, 2017 AT 10:53 PM

JOHN EAKINS

MEMBER
19 POSTS

They said, "everything should be fixed and the brakes are working well" then charged a $1,000.00 for no change in performance.

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Monday, July 17th, 2017 AT 4:25 AM

KEN L

MASTER CERTIFIED MECHANIC
54,137 POSTS

Hello,

I would start by using three vise grips and gently close the three rubber brake lines to each front wheel and the one rear. Once closed step on the pedal. It should not move at all, if it does then the problem is up at the master, if not the problem is down at the wheels.

https://www.2carpros.com/articles/brake-pedal-goes-to-the-floor

Let us know.

Cheers, Ken

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Monday, July 17th, 2017 AT 6:42 PM

JOHN EAKINS