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Frigidaire Dishwasher Making Noise

FDB949GFT2

The part(s) or condition(s) listed below for the symptom Dishwasher making noise are ordered from most likely to least likely to occur. Check or test each item, starting with the items at the top of the page.

Most Frequent Causes for Dishwasher making noise

Cause 1Drain Pump

First, check the drain pump to ensure that it is clear of debris. If the drain pump is clean but it is still noisy, replace it.

Parts
Drain Pump for your FrigidaireDishwasher
Drain Pump - Part # 1565470 Mfg Part # 5304475805
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Cause 2Circulation Pump

The circulation pump motor has bearings that wear out over time. When the motor bearings fail, they generate a continuous drone. If the motor bearings have failed, you must replace the entire circulation pump.

Parts
Circulation Pump for your FrigidaireDishwasher
Circulation Pump - Part # 1940279 Mfg Part # 154859501

Circulation pump and motor kit. Includes two pump housings, one for upper spray models and one for non-upper spray models.

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Cause 3Wash Impeller

The wash impeller is a small plastic blade that forces water through the spray arms. If one or more of the impeller blades is broken, the dishwasher will make noise. In addition, if the impeller is damaged, warped, or bent, it can scape against the pump housing. Inspect the wash impeller for damage. If the wash impeller is damaged, replace it. On most models, you can replace the wash impeller independently of the pump and motor assembly. Search for your model number to determine if your impeller is replaceable. If the impeller cannot be replaced separately, you will have to replace the entire pump and motor assembly.

Parts
Wash Impeller for your FrigidaireDishwasher
Wash Impeller - Part # 419194 Mfg Part # 154245801

Dishwasher pump impeller for motor & pump

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Cause 4Water Inlet Valve

The water inlet valve opens to allow water to enter the dishwasher. When it is new, the water inlet valve is very quiet during operation. Over time, the diaphragm inside the valve deteriorates and deforms. This deformation interacts with the water rushing in and can produce a loud vibration, buzzing, squealing, or other noises. If the dishwasher is loud during the filling cycle, replacing the water inlet valve may solve the problem.

Part Testing
Parts
Water Inlet Valve for your FrigidaireDishwasher
Water Inlet Valve - Part # 1378823 Mfg Part # 154637401

Dishwasher water inlet valve. The water inlet valve supplies water to the dishwasher. If the water inlet valve is defective, the dishwasher may not fill or may underfill.

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