Q: Cold engine misfire and hesitation - 1997 Dodge Dakota

My issue is when I first start the truck I have to let it sit for a minute or so before I take off. If I try to take off without performing this warmup ritual it will misfire and lose power until it warms up. Once warm it smooths out and seems to run perfect. It doesn't seem to idle up like most cars do on cold starts. It goes strait to normal temp idle speed. Somewhere around 725-750 rpms. It will idle with a misfire for a minute or so and then smooth out and won't return until the next cold start. Theres not a check engine light. Ive changed the plugs, wires, cap, rotor, tps, iac, and pcv valve with no change. I had a parts store hook a scanner up to it while running and at normal op temp and the upstream o2 sensor was bouncing from .14-.900 volts. The intake air temp was 165. It was 45 outside. Its taking in air from the fender well not from the hot engine compartment. i know it will read hotter than 45 b/c it's in the manifold but 165 doesn't seem right. Is that normal?

My car has 150000 miles.
My car has an automatic transmission.