Question about 1985 Volkswagen Quantum

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The hose that goes to my resevoir cracked when the weather got really cold. I am almost certain air found its way into the system as the end result. All I need to know is where the bleeder is located on the car. It is a 1985 VW Quantum Custom GL Sedan. Soon as I topped off the Dot 3 brake fluid the clutch gets pressure when pumped but finds its way to the floor again when fully depressed.

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You have air in the clutch slave cylinder . As old as it is I suspect you now have a bad master cylinder.

Why? Because over-stroking the pedal when low on fluid tends to **** in all the dirt that accumulates in the bottom of the system and damages the hardened old seals.

The clutch slave cylinder is on top of the bell housing and it has a 7mm across it's flats, bleed nipple.

This is a two man job without a pressure bleeder. Have someone press clutch down and you open slave bleeder, close bleeder and lift up pedal slowly.

Repeat, topping of the fluid reservoir, until firm pedal.

The brake reservoir also supplies fluid to the clutch. If the fluid gets low or clutch leaks, the reservoir is so designed to still allow fluid for the brake system.

Posted on Jan 19, 2011

Testimonial: "That is kinda of what I figured. So what is a reasonable price to repair such an issue? I dont want this mechanic to rip me off. Thank you so much!"

  • Don Aug 22, 2011

    Obtain a new reservoir from VW. If : NLA...No Longer Available. Try Parts Geek or find another oe parts supplier...maybe Cardon through O'riellys might help.

    Not a difficult job...drain the fluid from res' and pull off res from it's master cylinder...it's held on with rubber seals. Need to pull quiet hard so watch for obstructions when it finally lets go !

    Letting a shop do it ?..depending on area....around one hour labour plus the part and fluid.

  • Don Aug 22, 2011

    If it is just the hose that is bad you can get a length of compatible hose from an auto parts store....just tell them you need brake fluid compatible hose and the internal diameter.

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I'm sorry you have had such bad experiences with the shops.
I would have stopped at the second one and forced them to fix it at their cost.
I doubt you will be able to find the problem yourself, but I understand your hesitation to go back to another mechanic.
I will be happy to try to walk you thru the diagnostic process but it may take a few days.
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