Whistling / squealing noise 9400i

Discussion in 'International Forum' started by DHF, Jun 3, 2011.

  1. wrwashington63

    wrwashington63 Bobtail Member

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    Jul 12, 2016
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    I had similar hissing air leak that also caused the air alarm to sound and no increase in air on the secondary air guage. The air conditioning stopped blowing cold air as well.
    The problem was the ABS brake valve on the passenger side of engine near the inside of the frame.
     
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  3. QUALITYTRUCK

    QUALITYTRUCK Road Train Member

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    romulus,mi
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    I second HeavyD. Usually broken exhaust manifold bolt/gasket. #5/#6 are popular for this problem. Good luck and check all of the above carefully.
     
    Heavyd Thanks this.
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  5. James Johnson

    James Johnson Light Load Member

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    May 27, 2017
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    When I stop my brakes makes a little squealing noise when I stop when traffic on the highway. Is it my oil or my brakes are wearing out? I mean they still work perfectly but the squealing I don't think a lot of people like it on the road. I check it again when I stop at Love's truck stop today. Should be there probably at 3:56 PM or early or late depends on traffic.
     
  6. PREET1931992

    PREET1931992 Bobtail Member

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    Jul 29, 2018
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    How long can you drive like that?
     
  7. Parkwood Bill

    Parkwood Bill Bobtail Member

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    Aug 25, 2020
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    I’m having the same issues, did you ever find out the problem?
     
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