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Larry
Larry, Technical Editor
Category: Ford
Satisfied Customers: 1139
Experience:  Automotive tech editor & author, 30 years experience, ASE certified
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why does my car cut off when i stop

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Submitted: 9 years ago.
Category: Ford
Expert:  Larry replied 9 years ago.
If y ou are having a stalling problem when you stop or slow down, the problem is likely the idle air bypass valve. The valve may be gummed up with dirt or fuel varnish deposits, or the valve may be bad. Get a can of aerosol throttle cleaner, disconnect the air duct that attaches to the front of the throttle body, and spray the throat of the throttle body with the cleaner. Be sure the cleaer gets into the little holes in the side of the throat. If that does not help, y ou probably need to replace the IAC valve.