Troubleshooting Tips for Dirty Dishes: If your dishwasher is making strange noises like rattling, grinding, or whining, it’s usually a sign of a problem with the pump or motor. Check the dishwasher’s drain pump and motor for any obstructions, and if the noise persists, it’s best to call a professional to have it checked. Fixing a Dishwasher That Won’t Fill with Water: If your dishwasher won’t fill with water, the first thing to check is the water inlet valve. This valve controls the flow of water into the dishwasher, and if it’s not functioning correctly, the dishwasher won’t fill with water. Check for any clogs or blockages in the water inlet valve, and replace it if necessary.