Monitoring stock knock sensor

[NC_MP3]

1st MP3 in NH had this idea a while back and I thought about it myself. What if we monitored the knock sensor so that way we could tell if we were pinging or not with a light or something. Here is some info:

The knock sensor only sends data to the ECU when the following are met:

-Engine load is above 50%
-Coolent Temp is above 60C (140F)
-Engine speed is within 1500-5000 RPM

Also, when the above conditions are met, the knock sensor constantly sends a signal to the ECU. If no signal is sent for a 5 sec period the ECU throws a CEL.

Knock sensor pins are 57 (+) and 59 (-) on the ECU. With the ignition switched on, voltage on both those pins should be below 1.0V. I have not been able to find out what the voltage range is, so I assume anyhting above 1.0V is considered knock.

My idea was to make it so that when the knock sensor sends a certain voltage a light comes on, that way we could know when the engine is sensing knock.

What do you guys think?

 

[saided18]

that is a aswome idea. sounds good on paper. We just need to make it work in the real world!!!! but good idea!!!

 

[1sty]

Basicly what I had in mind, but aI am still trying to find a small, acurate voltmeter that way I can monitor how bad the knock is. Also I asume since its an AC voltage the + ans - pins are where the voltmeter will be placed across.

I figure why waste money and time worring about knock or buying aftermarket sensors when according to many people we actualy have a very good knock sensor that can directly monitor knock. I would hope the Knock sensor never turns off or stops monitoring knock and that the ECU just ignores it but we can keep watching it. I aslo find it rather strange that for a computer to stop watching the most important sensor in the car when it is most likely to show a problem.