Noisy [like loud motor running] almost all the time--for about a week

Magnetron

If the microwave is loud or noisy only when cooking, the magnetron tube might be defective. The magnetron uses high voltage, high current DC power to generate the microwave frequency that cooks the food. Under normal circumstances the magnetron is nearly silent. However if it is damaged or nearly burned out it can begin emitting high pitched or growling noises. It's not normally dangerous to use a microwave oven when it makes these noises, but they are an indication that the magnetron is almost dead and will need to be replaced.

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Exhaust Fan Motor

If the microwave is loud when running the fan motor might be

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Stirrer Motor

If the microwave is loud or noisy the stirrer motor might be worn out. The stirrer is a metal blade which slowly turns around, deflecting the microwave energy in a random pattern inside the microwave oven. As the motor nears the end of its useful life it begins to make grinding noises. The microwave will not heat food evenly without this stirrer, the motor should be replaced.

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Turntable Motor

If the microwave is loud or noisy the turntable motor might be worn out. This is a common problem and relatively easy to replace.

see this causes and fix it. God bless you
Magnetron If the microwave is loud or noisy only when cooking, the magnetron tube might be defective. The magnetron uses high voltage, high current DC power to generate the microwave frequency that cooks the food. Under normal circumstances the magnetron is nearly silent. However if it is damaged or nearly burned out it can begin emitting high pitched or growling noises. It's not normally dangerous to use a microwave oven when it makes these noises, but they are an indication that the magnetron is almost dead and will need to be replaced.
Exhaust Fan Motor If the microwave is loud when running the fan motor might be
Stirrer Motor If the microwave is loud or noisy the stirrer motor might be worn out. The stirrer is a metal blade which slowly turns around, deflecting the microwave energy in a random pattern inside the microwave oven. As the motor nears the end of its useful life it begins to make grinding noises. The microwave will not heat food evenly without this stirrer, the motor should be replaced.
Turntable Motor If the microwave is loud or noisy the turntable motor might be worn out. This is a common problem and relatively easy to replace.

as I said earlier when an engine is noisy, the problem is in the bearings and other times they seem to be the motor bearings when they are actually front roller bearings. check that and if necessary should be changed

Hey Richard Depending on the noise it could be one of several components failing. If loud clanking or clunking noises these components are Drive Motor, Front or Rear Rollers.
If it is a loud humming noise increasing and decreasing when planting yours feet then it is either the Inductor ( square object ) or the internal windings of the Drive Motor.
Unplug your unit remove the motor shroud with a long shaft flat tip screw driver you'll be able to pin point the problem with this tool.
Now locate front shaft and rear roller tension adjusting bolt ( refer to owners Manual) plug in unit, start unit and touch flat tip on the shaft and place your ear on the handle the noise will be amplified and you will be able to locate the noise repeat this procedure on the other above mentioned components if problem is not found. GOOD LUCK!

Check to see that the pool pumps mounting is secure. Loose mounting could cause the motor to run loudly. It could be bearings rubbing or a bent shaft. If it is new, this should not have happened. If you check the mounting and feel that it is secure, I would return the pump to an authorized Waterway service agent and let them look to see if the bearings or shaft are damaged. I would do this quickly while you can still return the pump if its defective.

Hi

If your dishwasher seems noisy, check these:
Water-inlet valve An aging water-inlet valve can sometimes fail slowly, rather than all at once. It can shudder on and off rapidly, causing the incoming water lines to shake, rumble, and rattle--sometimes violently. If yours is doing this, replace the inlet valve.

Motor If it's the motor that's noisy, either of these may be the "culprit:"

• As motor bearings wear out, they can become quite loud when the motor runs. They wear out quickly if they frequently get wet, because the water washes away the motor bearing grease. Bearings can get wet if the spin seal is defective. Then there will also be water leaking onto the floor beneath the dishwasher. Replace the seal if it leaks (read about the main tub seal in the "It leaks" section, later).
  
  
• If, from beneath the dishwasher, you can see a round, plastic disc that's mounted to the top of the motor (a "slinger"), it may have broken free of the motor shaft. If so, it could be rattling around the shaft while the motor is running. If that's the problem, you need to replace the motor.
  
  

Heater fan If the heater fan bearings are rusted or worn, they may squeal, or scrape loudly during the drying cycle. If this is the problem, replace the fan motor. Alternatively, the fan blade may be loose. If so, you need to replace it.

Pump Small fruit pits, toothpicks, and fragments of glass sometimes get stuck in the pump. When this happens, open the pump and remove the debris. The pump is usually mounted directly to the motor, then attached to the bottom of the dishwasher.

To get to the pump, you usually need to remove the lower rack, the spray arms, and the spray arm support from the inside of your dishwasher. A dishwasher pump isn't obvious. Look for an impeller--a round, plastic fan blade-type device that spins around and pushes the water toward the drain. When you can see the drain impeller, you should be able to see the clogging debris.


Please accept the solution and revert for any further assistance.

Thanks
Rylee

Remove the flue pipe from the top of the induced draft motor. Check to see if there any obstructions in it. If so remove them. If not replace the motor assembly.

Is it noisy always when running in heat or only for intermittant periods? Depending on where you live every 45-90 minutes of run time the heat pump goes into a cycle called defrost. The fan on the outdoor unit will shut off. the compressor will continue to run but in actually cool mode. this heats the outdoor coil and allows any frost or ice that is built up on the outdoor coil to melt. The compressor can get pretty loud in this mode and you may actually see steam coming off of the unit. This is normal. However if it is noisy all of time in heat check/clean your coils. If this doesn't remedy it have your refrigerant charge checked by a NATE certified Service Technician. Good luck.

it could be that your cooling fan gets noisy at times and stops for a while you could try to put oil on the shaft behind the fan this will help when it does get noisy pull the fridge kisten to the motor if noisy replace it its not to expencive about 40.00 dollaresthanks from gilles

Is it a frost free freezer ? if it is it sounds like the evaporator fan motor making the noise