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PLEASE HELP !! EVERYONES STUMPED!

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Old Jun 3, 2012 | 07:20 PM
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Question PLEASE HELP !! EVERYONES STUMPED!

1988 RANGER 2.9 V6 2 WD AUTO HELP

I HAVE BRAKES WHEN ENGINE IS OFF

I HAVE REPLACED MAST CYL AND BRAKE BOOST. BOTH BRAND NEW!

START ENGINE AND BRAKES TRVEL TO FLOOR WITH FOOT ON THEM.

( SAME SYMPTOM ) BEFORE REPLACING MASTER CYL AND BRAKE BOOSTER.

THEY PUMP UP AND WORK WITH VACUUM LINE TAKEN OFF AND PLUGGED.

BRAKES DO WORK WITHOUT VACUUM HOSE ON BOOST. "HARD BUT WORK"

WHEN CONNECTED AND ENGINE STARTED THEY HAVE A LITTLE BRAKE WHEN ON THE FLOOR.


ANY IDEAS? LOTS OF VAC FROM MANIFOLD.

I AM STUMPING THE LOCAL TECHS FROM THE LOCAL GARAGES AND PEP BOYS.
 
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Old Jun 4, 2012 | 05:24 PM
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I know this is a stupid question, but has anyone bled and adjusted the brakes?
 

Last edited by RebColonel; Jun 4, 2012 at 05:25 PM. Reason: omission
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Old Jun 4, 2012 | 05:51 PM
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does the truck have any type of ABS system ? This can bleed off the hydraulic pressure to the brakes.
 
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