1991 Chevy Camaro idle air control motor problem

1991 CHEVROLET CAMARO
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PEPPER2381
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Brakes problem
1991 Chevy Camaro Two Wheel Drive Automatic 36,000 miles

when i step on the brake at a stop my car stalls and i can start it up right away and drive it happends off and on to me and idles funny to sometimes i switched the iac with another car it does the same it i take off hose vacum to brake it runs fine but don't have power brakes then
Nov 26, 2008 at 5:26 PM
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DOCFIXIT
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Either the booster diaphram is faulty or the vac. check valve that hose attaches is faulty. Do you hear a hissing sound whene applying brakes? If so booster is bad. If you pull hose off car not running you should hear bvac. escaping , if not valve bad.
Nov 29, 2008 at 10:22 AM