Question about 2001 Ford Crown Victoria

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01 crown vic. making horn noise replaced the egr and iac , cleaned amflow too , but still making horn noise. what to check next! ichanged everything that it could be what am i missing!

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Hello Carter.

There is a revised snorkle for the air supply to the idle air control valve.
The design on yours would sometimes create this noise. Usually worse on cold starts.
A good parts guy at a Ford dealership should be able to find the updated part for you.

If you would like further assistance on this problem, ask me in a comment here.
Thank you for using FixYa.
KL

Posted on Mar 18, 2011

  • FUBAR Mar 18, 2011

    Here is the Ford part number, just in case the parts guy isn't on top of things.
    dealer part # F5AZ-9H308-A

  • FUBAR Mar 21, 2011

    Thank you for the rating. It is appreciated.
    KL

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The sound might be coming from the exhaust having a leak or around the intake.

Posted on Mar 18, 2011

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