The knock sensor is a ceramic crystal microphone. You can't check it with an ohmmeter. You can replace it, of course, but they aren't cheap and I think you will find it doesn't help a thing in your car to replace it.

Checking the temp sensor is a good idea, but best checked by observing the voltage at the ECU plug, not by physically accessing it under the manifold. There are some hints in the 7/9 FAQ to help shortcut the process, but the basic idea is to watch the voltage fall from its cold reading to fully warmed up. Here's a plot of the voltage as a function sensor resistance, along with a plot of resistance as a function of temperature. The graph is for LH2.4, but the sensor is monitored by the same current by the Rex and Regina computers.


--
Art Benstein near Baltimore

Reassembly is the reverse of disassembly. Except the profanity. You don't take that back; you just keep adding to it.