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Old 08-08-2004, 09:50 PM
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BigBlueSVX BigBlueSVX is offline
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Knock Sensor Code

I recently replaced both of my oxygen sensors and the car has been running much better, and my fuel mileage has also improved. The problem is that the ECU is throwing a 28, refering to one of the knock sensors. The check engine light comes on randomly and may only stay on for a few seconds. The car drives and runs great as far as I can tell. Should I go ahead and get the new knock sensors? I know to replace them in pairs, and that they should run about $30. What are symptoms of a bad knock sensor?
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Old 08-09-2004, 12:05 PM
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i am not sure on the details but i woulld assume that the car would advance more timing with a bad knock sensor unless the ecu can see that its faulty in which case it puts its self in 'limp' mode where its super conservative with timing.
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