I've read that frozen water in the tube could be a problem, but why
would 5 cubes be able to be made? The lever goes halfway up by itself
to stop the process. We don't have great water pressure but the
Whirlpool fridge/icemaker had worked for 3 years.

Thanks,
Mary

Hi,

I've read that frozen water in the tube could be a
problem

That would likely stop all the cubes from being made.

why would 5 cubes be able to be made?

Low water pressure fills, icemaker is broken and not keeping the fill
valve energized long enough.

We don't have great water pressure

Low water pressure fills is likely then. Clogged shut off valve,
clogged fill valve, clogged filter ( if used ), kinked line are some
possible trouble makers.

jeff.
Appliance Repair Aid
http://www.applianceaid.com/