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knock sensor test question

BlackGT97

BlackGT97

New member
just replaced one of the knock sensors on my project car because it was clearly broken (could move the connector). replaced it and took it for a drive and it showed 0kr ( which is the goal! lol). some reason I was not convinced so I crawled under there and put my scangauge 2 under the car so I could see it. I tapped around both sensors in multiple places with softly and then harder after it showed okr.after I didn't get a reading I checked the wires for resistance and that's not the problem either. So after that I crawled under a 2008 buick to see if I could get the scanner to read kr....and it didn't read anything ( I have the scangauge programed to read kr on both my 98 and my 2008 gp so its programed right). I should get the gauge to read KR by tapping the sensor/ around the sensor right? What else should I try?

no codes for the knock sensors btw
 


You did torque the sensor to the correct spec too right???


And I always smack the exhaust crossover with a hammer to see if the knock sensor works, maybe even a long screw on the side of the block (exhaust side) and tap it with a hammer.
 
yes torqued to the correct spec. I tapped the block right my the sensor with a brass handle on both cars and both sensors and I got nothing. ill have to hit the crossover and see if that does anything...Anything else? I really need to confirm that the sensors are working so I don't blow this motor up lol
 
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