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Old 10-28-2012, 10:47 AM   #21
shineboy
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Quote:
Originally Posted by Kabigon View Post
Think of the knock sensor as a microphone that is tuned to a specific frequency.
Even when the engine is running normally (no knocking/pinging), it has a certain amount of output.

If for example the knock sensor had no output while the engine is running, the PCM will see that as a bad sensor.
I hear you but dang less than 800 miles don't really expect any issues!
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Old 10-29-2012, 12:28 AM   #22
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I hear you but dang less than 800 miles don't really expect any issues!
The mk3 Focus (and especially the ST) has a lot of electronics. Sometimes it is just the luck of the draw.

Hopefully, it's as simple as replacing the sensor.
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Old 10-29-2012, 08:19 PM   #23
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Originally Posted by Kabigon View Post
The mk3 Focus (and especially the ST) has a lot of electronics. Sometimes it is just the luck of the draw.

Hopefully, it's as simple as replacing the sensor.
Replaced 10/27... so far so good
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