The car has been showing odd hesitation and slow acceleration under boost. I sent my ECU to ECMTuning to rule out an ECU error, and they report that the ECU is in good shape, although they did replace problematic caps and are socketing the EPROM. They suggested that my symptoms are consistent with a bad knock sensor.
As you well know, the knock sensor is a pain to get to. I can barely reach it from the driver's side. I do still have AC. It does feel like the goo (technical term) hasn't run out of my existing sensor, but I'm replacing it anyways. Ohm reading on the 2 pin is 560,000 ohm, and I've read its supposed to be around 2.
Can someone verify that it is 24mm?
Can it be reached from underneath? I've read a stubby 24mm is the best way to do it, but I'm open to new ideas.
How tight do I screw the new one in? I've read (on a DSM forum) that slightly more than finger tight. I'd like a more specific instruction if it exists. I'm thinking that I may have overtightened it when I screwed it in while the motor was out.
Any and all guidance is appreciated. New sensor comes in tomorrow, the ECU likely on Saturday.