I replaced my thermostat, today, and I took off the intake filter box to get a little more working room. While I had that off, I remembered your post here, and I took a look at that sensor. I think removing the intake is the way to go to replace the sensor even if it is more work. I tried to see how the guy in the video I posted could have accessed that sensor without removing the intake, and I'm sure it is possible, but it must be next to impossible, and I would worry about cross-threading the sensor doing it so blind.
Salty
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2005 BMW 330Ci ZHP Jet Black/Black with aluminum cube
Bone stock at the moment