What could throw knock sensor code?
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Joined: Jan 2004
Posts: 96
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From: Plainfield IL
What could throw knock sensor code?
My car has thrown the knock sensor code since I bought it. I replaced the sensor and moved the wire and it didn't go away. Since the plug that attaches to the sensor looked like crap, I had 'vette to vette send me one. I cut the old one off, wired up this new plug, and still got the code. Tommorrow I am buying another knock sensor and I'm going to redo my wiring just to cover every possible base, but if that fails, I am completely stumped!
Anyone ever have this problem?
*And yes, I do disconnect the battery to clear the codes and it still comes back.
Thanks in advance guys,
-Craig
Anyone ever have this problem?
*And yes, I do disconnect the battery to clear the codes and it still comes back.
Thanks in advance guys,
-Craig
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Joined: Oct 2000
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From: Fort Knox, KY
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The sensor could also be torqued in too tight or not tight enough. Check your Chevy service manual, but I think it's 15 lbs.
Also, if the sensor has any thread compound or tape on it, that could also make it throw Code 43. The orange coating that comes on the sensor is all you need when you bolt it in.
Also, if the sensor has any thread compound or tape on it, that could also make it throw Code 43. The orange coating that comes on the sensor is all you need when you bolt it in.
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Joined: Dec 2000
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From: SE NY
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Either real knock or false knock can cause the ECM to throw the code.
Real knock can come from too high engine temp, too much timing, low octane fuel, carbon build up on the piston, etc.
False knock can come from metal-to-metal contact, noisy lifters and, on '85-'88 L98s, a faulty ESC module. If the latter, check my site for the ESC upgrade P/N.
Real knock can come from too high engine temp, too much timing, low octane fuel, carbon build up on the piston, etc.
False knock can come from metal-to-metal contact, noisy lifters and, on '85-'88 L98s, a faulty ESC module. If the latter, check my site for the ESC upgrade P/N.
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Joined: Sep 2000
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From: The Top of Utah
Originally Posted by 65Z01
Either real knock or false knock can cause the ECM to throw the code.
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