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Suspected brake booster failure 200 1977

posted by  1Sweden on  Tue Jan 28 18:12 CST 2014
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last visit: Tue Oct 21 17:37 CST 2014
[RELATED]

My faithful 245 has just developed an interesting problem. The brake failure light has come on and the brake pedal has gone soft. This has been accompanied by an extremely rough idle. If I pump the brake pedal quickly the pedal firms up a (little) bit AND the idle smooths out and rises. As soon as I stop pumping the pedal the idle drops and becomes rough again. I'm thinking that the brake booster has failed but does anyone else have any thoughts? (BTW, my car is carbureted so the brake booster is driven by manifold vacuum).






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