I'm guessing the 1k to 4k thing is for checking when cold. That should cover temperatures from about 10 degrees F to 100 degrees F according to a chart I have (although I think it's for Toyota's). I'd imagine that the resistences used are pretty standard for these sensors.
I might go outside in a little bit and measure the sensor when cold, then get it up to operating temp and see what it gives.
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Scouring the country for an excellent condition Civic VX
Flatland2D 
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