lagos #1 I found this on youtube by accident and found it to be very informative as to how a knock sensor works and how to accurately test one.Check it out:http://www.youtube.com/watch?v=L8xRJIWkHuo...feature=related 15PSI - 30MPG - Megasquirt Tuned
presure2 #2 yup, good stuff art.i've always likend the knock sensor to a microphone, tuned to only "hear" certain frequencys.exactly what he discribes. Former Team 5SFTE pro member ;)13.6@108MPH, 5SFTE Powered
Smaay #3 that second pic is an oil presure sensor 2001 Celica GT-S Turbo1997 Supra TT 6speed1997 Celica 3MZ/1MZ swap1990 Celica All-Trac