How To Fix A Noisy Dishwasher

A noisy dishwasher can be frustrating and repairing it through a serviceman can be expensive. Even for someone who may not consider themselves handy, repairing a dishwasher is not a difficult process. Below we’ve provided you with a list of the most common parts that fix a leaking dishwasher. Use this information to help troubleshoot which part is broken, and then enter your model number in the search box to find the right part for you, along with tons of helpful information like our step by step installation videos and instructions.


    • - Customers rate this repair as Easy
    • - Takes 1 - 2 hours
    • - We have 257 installation instructions
    • - We have 1 step-by-step video

    A defective pump could be the reason your dishwasher is making loud noises. The function of the pump is to pressurize the spray arms and in most models it is also used to drain the water. The pump sits at the bottom of the dishwasher and typically consists of two separate compartments; one for wash or circulation and the other for drain. The circulation part of the pump will typically consist of the wash impeller and the filter components while the drain portion will consist of a drain impeller and a chopper blade or in some cases, a solenoid operated diverter. The impellers are driven by an electric motor that is attached to the bottom or side of the pump.

    Check that the pump housing is not loose and that the motor bushings or bearings are not the source of the noise. Check the impeller areas of the pump for broken glass, bones or foreign material that may be present and causing noise and inspect the impellers for signs of damage and replace if necessary. Also, check the food chopper in the drain section for signs of damage or wear and replace if required.

    Wash Arm Bearing Ring & Spray Arm Seal

      • - Customers rate this repair as Really Easy
      • - Takes less than 15 minutes
      • - We have 85 installation instructions
      • - We have 1 step-by-step video

      If your dishwasher is noisy, the cause could be the lower wash arm seal or bearing ring. Both parts are plastic rings that support the lower wash arm and that the arm rotates on. Either of these parts could be loose or be worn causing the spray arm to not function properly. Inspect both the seal and the ring and replace if required.

      Spray Arms

        • - Customers rate this repair as Really Easy
        • - Takes 15 - 30 minutes
        • - We have 647 installation instructions
        • - We have 8 step-by-step videos

        Check to ensure that the spray arms are turning freely and are not hitting the racks or dishes. If the arms are wobbly, then the center portion or hub of the spray arm may be worn and the spray arm will need to be replaced.

        More Repair Parts

          We’ve identified the most common parts that can cause a noisy dishwasher, but there are other parts that could be at fault. If you are unable to fix your dishwasher with the information above, enter your model number into the search box for additional repair help. Searching with your model number will give you access to all parts and schematics, symptoms for your specific dishwasher as well as all installation instructions and videos.