Hi, I have an older dishwasher also and recently my wife also complained about it not cleaning right... so me being the man I am tried in vain to clean the things... Bought new spray arms online and installed them in minutes...now the thing works like new... However I have also found that if the heating element goes bad then that also can mess things up bad... So I would buy new spray arms, and also check out the heating element to make sure it is working... Here is a tip that will help you with the online buying... Dishwasher Residue and Film on Dishes
Dishwasher Spray Arms not Spinning
How to Buy Appliance Parts Online
A bad heating element causes many problems in dishwashers...
Dishwasher Problems The Heating Element not Working
Dishwasher Maintenance
heatman101
Asker
Hi
Dishwashers use Bi-Metal strip to allow the dispenser to open/close. This strip
when heat up causes the soap door spring to open up the dispenser. If this
strip is not heated doesn't allow the door to open. The strip may not be
getting 120V or maybe disconnected. Newer (plastic liner) dishwashers use a wax
motor to open the soap dispenser. The plunger inside the wax motor slowly moves
and pushes the plunger and door open. And, if this wax motor doesn't receive
120 volts, then it'll not work. Please check the voltage to the wax
motor/Bi-metal strip; also inspect the connections to these. Dishes are not
clean if water is hard or when more detergent is used than needed, try filling
detergent cup half way. Try using white vinegar after the wash cycle is
complete, run a complete cycle. Also turn down the heat on the hot water fed to
the dishwasher. Try using water softener for better results. You can also add
vinegar in the final rinse cycle. Make sure that your soap dispenser drawer is
opening and closing fine. Hope this helps... Please post back if more information is required.
Daniel
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