Noises From Dash During Engine Start

  • 01/24/2021 10:58 AM
    Message # 10005415

    I have a 2018 Pace Arrow 35E on an XCS chassis. After I first turn the key to run, preparing to start the engine, about the time the chime ends, there is a cacophony of noises from under the dash that lasts for about 5 seconds and sounds like various servos or valves operating. It sounds like they come from the dash heat/air system. It’s been like that since I purchased it used about a year ago.

    Does anyone else with a similar chassis experience anything like that? Trying to find out if it’s normal before spending time trying to figure it out.


  • 01/25/2021 1:31 PM
    Reply # 10031926 on 10005415
    Pete Baker (Administrator)

    Try turning off your dash AC before turning on the key to start.  If that eliminates the sounds further inspection is called for  There is a cooling fan under the front of your coach connected to the AC unit.  if there is something stuck in the fan blade cage, this could be your result.  

  • 08/06/2023 3:26 PM
    Reply # 13237254 on 10005415

    I hear clanging noises when key is turned on--2018 Pace Arrow LXE-38K..are there flaps in ducts that are resetting? Is the noise normal?  The a/c blows hot air and I am wondering if maybe a vent is closed off or if the flaps are preventing the flow of air?

  • 08/06/2023 7:19 PM
    Reply # 13237325 on 10005415

    William and Edna:

    It sounds exactly like what happened on my Ford Edge SUV.  There was an ‘HVAC Blend Door Actuator’ that went bad up under the dash which made some noise, didn’t do its actuating of the blend door and all I got was hot air on that side of the SUV.  The good news was that it was a typical issue, their were a number of YouTube videos on how to replace it, and the actuator itself was available on Amazon for about $35.00.  You could attempt to locate it yourself once you look it up and see what it looks like.  If you do, it should be relatively easy to replace (model # should be stamped on it, etc). Otherwise, any car mechanic should be able to quickly replace it if they have the part.

    Or… could be something completely different.  Just a guess.


    Last modified: 08/06/2023 7:20 PM | Anonymous

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