Knock Sensor issues and AEM EMS question too.
I have been running an AEM EMS on my red top sr20det in my lotus for 2 years now, but have decided to start pushing it, but in this time have noticed that I never get any knock voltages. It always reads 0 v or like .035 volts.
So what I did:
1. Taped on the block with a hammer to see if I could get the volts to spike but no changes in the voltage.
2. Swapped in another knock sensor I got off a junk yard motor. No change...still 0 volts on logs.
3. Tested both knock sensors and both read 1k ohms, which I think I read on the forums is what the FSM says to check to make sure the knock sensor is good.
4. Checked the wiring. I got continuity at both the connector by the intake manifold and at the ECU so the wiring is good.
So after this it would appear that everything is good and checking out, but I never get any voltage changes when I log runs, and like I said, hitting the block with a hammer didn't produce anything either.
SO THE QUESTION:
1.You guys running AEM EMS's what kind of knock voltages are you seeing?
2. FOR EVERYONE ELSE. What ohm resistance should I be seeing at the ECU on the knock sensor pin?
Thanks.
J. R.
PS. I put this in this section instead of the engine management section, because I really need more help figuring out the knock sensor. The question about what other people are seeing on the AEM is just so I know I am not crazy.
Last edited by flexer; 10-05-2010 at 10:37 AM.
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