Reading up on this they usually fail in the 'other direction', as in they fail 'hot' and don't enrich cold starts so you have to pump the throttle yourself like an eighties peasant. Overfuelling making hot starts harder? Not impossible, just unlikely. I wheech it out.
Somewhere I find the resistance values over the temperature range it's expected to see, and grab both my IR thermometer and a multimeter and head to the gas hob for testing. The curve looks pretty much exactly how I expected it to look, but the real test would be leaving it on the heat for a couple of hours to see how the values looked then, to see if it was breaking down in the heat. I cannot be bothered, and instead head south to Haarlem.
The new sensor 'requires' cutting the original harness and crimping on a new multiplug. I have a chronic aversion to that sort of thing. I cut the old sensor wire and crimp the new multiplug on to that instead.
My hot idle is perfect now. Hot starting? We'll see.
