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Knock Sensor

Tiny
JIMMIEZ
  • MEMBER
  • 2007 CHEVROLET HHR
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 88,300 MILES
My check engine light indicates a "knock sensor" problem. Code P0325. How does this affect engine performance and economy? Will a defective sensor intermittently kill the engine?
Saturday, June 18th, 2011 AT 9:04 PM

3 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
--The KS is to retard the ignition timing when engine starts to detonates/ping. Yes it'll affect engine performance and fuel economy
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Saturday, June 18th, 2011 AT 9:23 PM
Tiny
JIMMIEZ
  • MEMBER
  • 31 POSTS
Thanks for the quick reply. I assume this sensor is located on the engine somewhere, but exactly where?
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Saturday, June 18th, 2011 AT 9:34 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
What is it-2.2 or 2.4 liter-see below
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Saturday, June 18th, 2011 AT 9:45 PM

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