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Knock sensor open circuit? 

 

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 Post subject: Knock sensor open circuit?
Posted: Wed Aug 24, 2005 11:14 pm 
Parts Gopher
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Ride: Falcon Futura EL

Location: Sydney
NSW, Australia

I have removed the knock sensor (while removing the coil for testing) and attempted to test its resistance... it's an open circuit. Is the thing bung? What resistance should I be looking for?
The computer didn't log a fault code last time I checked, hmmm.

J
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Posted: Thu Aug 25, 2005 12:33 am 
Site Admin
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Ride: AUII V8 LTD

Power: 270 rwkw

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NSW, Australia

I have a feeling the may be an open circuit until the car pings, which has it output a wave form.

That could be well off the mark too. If your computer hasnt logged a code, its obviously not an issue :)

 

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Posted: Thu Aug 25, 2005 2:05 pm 
Getting Side Ways
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VIC, Australia

It's a pizeoelectric sensor with some filters. Don't even bother trying to measure it's resistance.
Should have 3 volts across it (from batt neg to sensor output) with ignition on and engine off.

 

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Mods: Crow Stg3, Chiptorque Dynotune. Lukey Exhaust. DBA slotted rotors, EBC Pads. Whiteline Low Susp. EL GT Swaybars, ROH Envy 17 x235 wheels. Vehicle Datalogger Display V2.0,

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