Kenmore dishwasher is not washing properly and leaving dirty water in the bottom when it is finished, Can i fix it?

Drain hose clogged or Not ran in the proper draining position, under the sink where the hose ties into the drain system or garbage disposal, the hose should be higher than the connection point, I have fixed this by tie strapping hose to the bottom of the counter or sink, hope that helps ?

I solved the problem by adding Cystal powder sold by the Dishwasher detergents. Just a butmakes all the difference.

Make sure your Drain Pipe is properly fixed . any Blockage in the Drain Pipe Creates the above mentioned Problem

If your washer is overfilling, check these:

Water-inlet valve
Water-level switch
Water-inlet valve A defect in the water-inlet valve may mean that it's no longer able to shut off completely when the electricity has been turned off to it. If this occurs, the valve may leak and drip water into the clothes tub. In time, the water may accumulate substantially. If this happens, you need to replace the valve.

Water-level switch A defect--or an obstruction--in the water-level switch may mean that it can't tell the water to shut off. So the machine overflows. This switch senses the water level in the clothes tub. It's usually a diaphragm device with a small, clear tube attached between the switch and the bottom of the washer's outer tub. As the water level in the tub increases, the pressure on the air in the tube increases. When the pressure reaches a certain level, it activates the switch, shuts off the water, and signals the timer to begin the agitate cycle. You can either clear any obstruction in the tube or replace the water-level switch.

wash them by hand

The arm usually will stop rotateing because there is a obstuction in the arm itself you will need to remove the arm normally unclips (older machine used to scew off)When you have the arm out check all hole top and bottom and open any that are blocked rinse out arm and replace give it a wash and see if there is any improovement,let me know.
Thanks

Hi Dirty Dish gang.
After having 2 appliance repairmen here, I now have the latest scoop on our dishwasher problems, $200 later!
Los Angeles IS currently having hard water issues. Also, all the new cleaning gels etc. are actually a cause of our dishwasher problems.  
So, here is what we need to do:
1. Use Cascade POWDER detergent only.  Make sure is is just "plain" no "scented" or "complete"  or gel, etc. (I have tried a phosphate free powder and gel and this is a cause of our problem as well!) 2. Use Jet Dry in the dispenser (set it to a 2-3 opening) 3. Make sure water is at least 120 degrees 4. Only run dishwasher on "normal" setting.  All others just run it longer, hence causing more water stains. 5. Do not pre-wash dishes! You can knock of chunks with a "non" soapy brush, but don't rinse (the oils actually help to clean the dishes) 6.  Do not wash sponges in dishwasher.
Acid Wash: The repairman just gave my washer an Acid Wash today. It says it is an acid derived from lemon, I got mine from Carters appliance in Torrance, CA for about $19. I am to run a normal cycle with the above mentioned Cascade after this "acid cycle" is finished.
If you are still having problems:
Monthly maintenance: Glass Magic: Buy a box of Glass Magic (near the Cascade)  Use 1 Tbsb in main detergent compartment of dishwasher along with the Cascade, till washer starts working again. White Vinegar: You can run an empty dishwasher with white vinegar once a month.  Fill a bowl with 2 cups vinegar and place on bottom rack.  Then run as a normal cycle...this allows vinegar to disperse slowly.
So far it seems to be working.  Good luck.

If you have a warranty on the dishwasher, I would call them to fix it>

your filter or pump are clogged. Remove bottom filter and clean it out.
If that does not work you have to clean the pump

there is a new product out that filters the water going into your dishwasher. it works great and my dishes look fantastic. they use to look dirty with a white film on them. after the first load when i hooked up the dishwasher filter my dishes looked brand new. it is affordable and works everytime. you can get it at www.dishwasherfilter.com.