I have a 110.96468800 Kenmore dryer. The problem I am having is that I have to run 2 cycles to get the clothes dry. Here is what I have tried.

Checked the wall outlet it has 110 power at the required spots and 220 when I check the 2 110 together.

Cleaned the internal lint screen shoot, top to bottom, cleaned the blower fan at bottom of shoot, cleaned lint screen then ran water through it, it works fine.

Cleaned out the two sets of holes inside the drum, cleaned the exhaust shoot and the one on the house. It is the ridged 4" all the way through. This exhaust shoot in the house goes from the dryer straight up the wall and out the roof; this is about 16’ long and has no obstructions.

Started the dryer, it runs up to 170deg then immediately goes to 120deg then it continues this cycle over and over.

Any ideas?

I would scratch my head with this one too, as long as I was positive the vent tube riser was clear of lint... Then I would locate one of those rebuild kits for kenmore dryers made by whirlpool... Call APPros to see what the part number is for a kit, should be cheaper than buying the individual parts... There's 2 different kits, 1 for standard dryers and another for commercial heavy duty dryers... Comes with new belt, rollers, pulley, and most importantly new drum felt seals which may be the culprit in your situation... When these seals wear out they allow heated air to escape around the drum instead of flowing properly thru your clothes and out the exhaust vent... Taking too long to dry your clothes is a classic sympton of worn drum seals or clogged exhaust vent... cheers, kooler