To determine if your top-load washing machine drain pump is bad, first check for obstructions and power. Inspect the pump for a jammed impeller, and test the motor with a multimeter for correct electrical continuity (typically between 160–260 ohms).
First, set your multimeter to the 2k setting, which stands for 2 kiloohms. Then place the two multimeter prongs into the socket in which the electrical connection was connected. If your drain pump is working properly, the multimeter should show a reading between 160 ohms to 260 ohms (with about 5% leeway).
A Bosch washing machine not draining is typically caused by a clogged pump filter, a kinked drain hose, or an obstruction in the pump's impeller. Always unplug the machine and turn off the water supply before attempting any maintenance, and keep a shallow pan and towels ready for water spillage.
To check a faulty drain pump in an appliance like a washing machine or dishwasher, first isolate power and access the pump. Inspect and clear the filter for clogs. Check the impeller for physical damage and test its mechanical and electrical resistance with a multimeter.
Common drain pump failure symptoms include: Incomplete cycles: Have you recently checked a wash load only to discover a full reservoir or soaked clothes? These issues indicate incomplete cycles, a hallmark of a failing drain pump. Stinky smells: You might detect rotten or decay odors wafting from your washing machine.
Understanding Common Signs of Washing Machine Pump Issues
To "reset" a washing machine drain pump, perform a system power reset or manually clear the built-in pump filter. A hard reset clears electronic glitches, while clearing blockages (like coins or lint) restores mechanical function.
On average, you can expect a quality, professionally installed sump pump to last for approximately 7 to 10 years.
The average lifespan of a washing machine is 10 to 13 years. However, this varies by type; simpler top-load models often last around 14 years, while more complex front-load models average about 11 years.
A faulty drain pump motor may make noise or only run intermittently in the drain portion of the dishwashing cycle. A weak motor may not make noise but it won't be strong enough to pump out all of the water from the dishwasher tub.
What are common problems with Bosch washing machine?
Step-by-step tutorial – How to drain the water away which stays in the machine
Most newer top-load washers do not have a user-serviceable drain filter. Instead, they rely on self-cleaning pump systems and larger drain holes to flush out lint and debris automatically.
To remove simply turn the pump motor while depressing the tab that locks the rotation and simply take the electrical connectors off. Grab your new pump, reconnect the electrical connectors and reconnect it. There you go - all done! Well done you on being able to replace your washing machine drain pump all by yourself!
You load your clothes, drop in some soap, and press the power button. Easy! Except when a cycle takes forever or your clothes come out dripping, or even worse, the washing machine makes scary noises. Don't worry — it's likely just a clogged washer drain pump filter.
How to unclog a drain
Whether to fix a 7-year-old washing machine depends on the repair cost vs. the "50% rule." Generally, if the repair costs more than half the price of a new machine, replacement is smarter. For a 7-year-old unit, you should only proceed if the repair is under $150 to $200.
The most expensive washing machine parts to replace are usually the drum and bearings, followed closely by the motor and control board. While some repairs are worth doing, in many cases replacement is the better long-term investment—especially if your machine is older and less efficient.
To check a washing machine drain pump, first unplug the machine and access the pump (usually located behind a lower front panel or near the back). Drain any residual water, clear the filter of debris, check the impeller for physical jams, and use a multimeter to verify electrical continuity.
For the least amount of mechanical issues, Speed Queen is universally praised as the most reliable brand due to its heavy-duty, commercial-grade build. For modern, feature-rich machines, LG consistently ranks at the top for front-load reliability, and Whirlpool/GE are top choices for traditional top-loaders.
Symptoms of a Blocked Drain Hose
Speed Queen is the longest-lasting washing machine brand, boasting an industry-leading lifespan of 20 to 25 years. They use commercial-grade metal parts and industrial motors. For heavy use, Miele and LG are also top-tier choices.
'Removing clothes within 30 minutes (or even sooner) is a good habit to get into, as it helps prevent that stale odour from forming. Leaving damp laundry in the machine for several hours can undo lots of the freshness you've just achieved with detergent and fabric softener, meaning you may need to rewash the load. '
As a general rule, you should repair your washing machine if it is less than 5 to 8 years old and the repair cost is less than 50% of the cost of a new machine. If your machine is older than 10 years or requires back-to-back, costly repairs, replacing it is usually the better investment.