No, a 22lr rifle is not enough for coyotes and/or fox, let alone talking about 170yrd shots. I wouldn't even recommend the 22mag for coyotes or fox at that range.
Yes, it CAN kill them at these ranges, assuming you can connect, but here's the skinny: I can drive a nail with a wrench, but that doesn't make it a hammer.
You'll see dogs run off even when well hit. They just don't have the power to quickly kill coyotes at those ranges, even with perfect placement.