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Old 28 May 2008, 05:32 PM   #1 (permalink)
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wrx 52 plate

hi does any1 know wot a knock sensor is?
is it easy to change and where does it go thanks
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Old 28 May 2008, 06:40 PM   #2 (permalink)
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The knock sensor is located on the block under the intake manifold.

Link: http://bbs.subaru-impreza.org/showthread.php?t=28428
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Old 29 May 2008, 11:24 AM   #3 (permalink)
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hi mate do u know wot it is for by any chance?
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Old 29 May 2008, 11:31 AM   #4 (permalink)
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thanks for all the diagrams u sent
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Old 29 May 2008, 01:08 PM   #5 (permalink)
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Knock sensor is there primarily to prevent detonation. If it senses detonation it should then retard ignition timing accordingly.
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Old 29 May 2008, 01:35 PM   #6 (permalink)
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thanks mate, is it important that i change it then?
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Old 29 May 2008, 10:25 PM   #7 (permalink)
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If it's gone then yes. in the short term it will certainly effect performance and economy if you're suffering detonation, but in the longer term it could cause damage to the engine itself.

Last edited by rikimaru; 30 May 2008 at 03:24 AM.
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