Question about 1990 Cadillac Deville

2 Answers

Fluid not gushing out brake line

Both front brake lines replaced passenger side shoots out the fluid but the drivers side one isn't getting fluid to it. could it be the caliper is bad on the drivers side...master cylinder and brake booster are new

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  • michaelranth Jul 19, 2009

    where's the combination valve located?

  • Anonymous Mar 24, 2014

    brake lines rusted. can't find how to put new ones on.

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  • Cadillac Master
  • 14,036 Answers

Sound like problem is in the combination valve.

Posted on Jul 19, 2009

  • Jonah Oneal Jul 19, 2009

    sorry your vechicle has a delco power master 3 ABS BRAKE SYSTEM.you dont have combination valve.if you have 1990.cadillac.the combination valve would be on the mid 80s cadillac.your master cylinder and hydralic booster are part of the hydralic modulator assembly.make sure your master cylinder full of brake fluid.you have to turn ignition switch to on position to get the accumulator full of fluid.turn off ignition switch.make sure master cylinder is still full of brake fluid.open bleed on driver side.to see if brake fluid come out if not.turn on ignition for a minute then.turn off .then have a assistance to press your brake pedal down.besure to put a clear hose on bleeder screw .and the other end of hose in clean container with 1/2 brake fluid.if no brake fluid dont come out. problem is in the power master 3 and master cylinder unit.

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  • Master
  • 335 Answers

Be sure the bleeder screw is not clogged with dirt and rust.

Posted on Jul 19, 2009

  • Moe Jul 20, 2009

    The combo valve is located directly under the master cylinder on vehicles not equiped with anti lock.

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