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Knock Sensor 700

posted by  invar on  Fri Oct 18 07:20 CST 2002
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last visit: Fri Feb 26 21:00 CST 2010
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My favorite way of testing the knock sensor is disconnecting it and taking an Ohmeter and testing it across the knock sensor's two connectors. There should be about 4.8MOhms (megaohms) of resistance between it. If it doesn't have that, then you should replace it.

Your car might or might not react badly based on several different things. If your car, for example, were knocking, and the KS was working and retarding the timing, then you would get knocking after disconnecting it, thus being bad. If your car WEREN'T knocking, and your KS was retarding the timing, disconnecting it would prevent it from retarding your timing, thus bettering the performance and emissions.

I do NOT recommend running for any extended amount of time without a knock sensor. Do the resistance test as directed above. It's simple. Just make sure your ohmeter can do it.

Edit: and yes, read the FAQ please :)
--
Kenric Tam
1990 Volvo 740 base sedan (B230F)
My Volvo 'Project'






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New Knock Sensor [700]
posted by  someone claiming to be Quijibo  on Fri Oct 18 06:45 CST 2002 >


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