Brake issues, out of ideas

sptsailing said:

In a PDF Document, "erWin.Jetta workshop manuals.Running Gear.Brake systems.pdf", I looked into this on your behalf and found no springs or other thing that seemed to be responsible for pulling the brake pedal back into position other than the servo. The following text from the document pertained to checking it:

"Functional check:
– With engine switched
off, depress brake pedal
firmly several times.
(This will release the
vacuum in the unit.)
– Now step on and hold brake pedal with medium pressure and start engine. If the brake servo is functioning
properly, the brake pedal will be felt to go down as the servo takes effect."

I have no experience with repairing any of this on this car, as my brakes have worked fine since I bought the car 9 years ago, so this post is only conjecture.

That said, I once did find and replace a cracked plastic vacuum line attached to the servo.

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chaoscreature said:

Is the fluid level dropping at all? No

Has the system been properly bled of all air? To my knowledge, my mechanic did this
How does the pedal pressure feel? If you press on the brakes is it spongy, or does the pedal come to a somewhat firm stop? Kind of spongy



Does pumping the brakes firm things up? Yes


Have you checked all the calipers to make sure they aren't hanging up? No, I haven't, but I wouldn't think pulling back up on the pedal would disengage them if it was the calipers sticking

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Metal Man said:

So do the brakes release and the pedal stays put or are the brakes still activated and the pedal doesn't come up? I would assume the brakes are still on? Yes, the brakes are still on and the pedal stays put Can you pull the pedal back up? Yes, and it disengages the brakes

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