Originally Posted by Savington
To answer your pre-edit question, I wanted to hook up the sensor directly to a preamp and see if it was producing any signal. I have a recording studio and the sensor is a microphone so that wouldn't have been a problem to try.
I'm not pulling the sensor now though. I connected up a test-tone box to the knock sensor harness connector. The test tone box puts out 1V and the Hydra displays the knock sensor voltage on the software interface. When I connected it up, I saw no change in the knock sensor ECU display.
That makes me think that the wiring is buggered, my factory harness is buggered, my ECU harness is buggered, or my ECU settings are buggered.
This stupid sensor is not rocket surgery. I had this exact same sensor on my old motor, with the exact same harnesses. The only difference is that I upgraded from hydra 2.5 to 2.6 along. That makes me think my ECU settings are fucked. This is a FM map straight from the mittens of Jeremy (got it yesterday) but the **** still isn't working.
A little more info on the ECU readout-- it doesn't actually read 0. It dithers between .1 and zero. Doesn't budge when I hit the block with a breaker bar. If knock was louder than that, well, my engine would be exploding. I think the knock sensor voltage range is probably 0-5v. My old map picked up about .5v of signal at 7000RPM. Light pinging was around .75v