Yes, I had the car scanned about 7 months ago and it said the Knock sensor was faulty, but said it would not affect drivability so I did not replace it. I scanned it yesterday and I had the knock sensor and oxygen sensor code come up. I have replaced the oxygen sensor and will replace the knock sensor on Monday. I don't think these sensors would be causing a misfire this bad.
The misfire seems to get worse when the car has been driven a lot in one day. It also has a low rpm studder when you rev the engine from idle speed.
I am also replacing the spark plugs and wires to see if this helps.
Sunday, March 18th, 2007 AT 4:01 PM