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Is this knock sensor bad? Also where is the knock sensor wiring on the harness?

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Old 09-16-2006, 03:09 PM
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Is this knock sensor bad? Also where is the knock sensor wiring on the harness?

HI guys,

After getting my 97 Ka into my 93 s13 I started it and it had a rough idle and now is not starting at all. The codes I am throwing are 12,13 and 34. I cleaned the MAF and got the old knock sensor off. It has a crack down the hard rubber on the outside of it - and the wires were pulled out of the harness plug? Luckily I used my engine harness when putting this engine in. But I cant find the plug on my harness. Is this a 2 part harness (Knock sensor plugs into a harness on the block which then plugs onto the engine to ecu harness?)?

So it this knock sensor still good? And where on the harness is the wire for the Knock Sensor?

Pictured Here-
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Old 09-17-2006, 10:59 AM
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If it's cracked I don't know if I would trust it. Wouldn't hurt to get a new one, that's for sure. The knock sensor is plugged in where it meets the block and the harness runs up front to the motor, you can see it in the pictures.


This is where your knock sensor connects up front.
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This is what the knock sensor plug looks like.
Name:  knocksensor2.jpg
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Blurry, but these are the two wires in the knock sensor.
Name:  knocksensor3.jpg
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Last edited by Fireplug; 09-17-2006 at 11:04 AM.
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Old 09-17-2006, 02:58 PM
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thank you very much... now looking for prices
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Old 09-17-2006, 03:03 PM
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i got a knock sensor question, when i fried my engine(overheated like a ****) the knock sensor melted a bit, think its still safe to use, just curious, i can try to get a pic if it will help
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Old 09-17-2006, 03:26 PM
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I wouldn't trust it, but the only way to truely tell is by getting a volt meter on it.
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Old 09-17-2006, 10:22 PM
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sorry for the thread jack, but would you have to have the sensor on the car to check it, ill go seaching
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Old 09-18-2006, 11:16 AM
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How do I check the knock sensor with a voltmeter?
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Old 09-18-2006, 11:16 AM
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How do I check the knock sensor with a voltmeter?
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Old 09-25-2006, 12:36 AM
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Originally posted by TurbLu
How do I check the knock sensor with a voltmeter?
This should help.
Attached Thumbnails Is this knock sensor bad? Also where is the knock sensor wiring on the harness?-untitled.jpg  
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