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1992 Chevrolet Suburban 1500 Question: vacuum loss during braking

 

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pappajohn, Gasoline, Leander, TX, July 15, 2009, 15:54
 Rookie

I have had a spongy brake pedal and have a vacuum loss when I brake. I have replaced the master cylinder and bled the lines including the control module, 4WAL. I can still hear a squishing sound coming out the power booster boot. If I cover the end of the boot where the shaft comes out, I have a firmer pedal. Could that be my vacuum loss? Should I replace the power booster.

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  • Answer #1

    July 16, 2009, 06:43
     Journeyman

    Definitely sounds like a vacuum booster problem.

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