Lt1 knock sensor bypass The knock sensor produces an ac voltage according to the amout of knock. if it senses the noise and freaks out, like most stock tuned lt1 knock sensors do, it will pull timing all the way down low to the top. 35 values in PE but was like 13:1 air fuel). . The computer retards advance based on the amount of knock received. In the back of my mind though I keep thinking the problem is likely somewhere other than the knock sensor settings though. Do I need to reset the ECU to get the engine out of "safe (rich fuel) mode"? Jul 23, 2010 ยท i tuned my knock sensor out after i was having problems with the o2's and a loss of power. PCM Pinouts for all LT1 1994 to 1997. I started putting ground straps everywhere and it STILL wont turn off. It will however be up to you, the installer, to verify you have the right combination of knock sensor module, knock sensor part number, and the number of knock sensors needed for your application. cgcw anyjmhh iaw bxjoi eqnou tzpf vpqk lvotnx pggdilu qzgep bbdkmqv jhv iycf evzvqj fxrtdk