ashley r 4/30/2012

1999 Pontiac Grand Am SE 6Cyl3.4L - Engine

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My car is literally shaking when idled at a light. It feel like the engine is knocking. What could that be?

Check engine light on, shaking/knocking,

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  CVO 4/30/2012

  1.Local auto parts stores such as Autozone ( not in California) or Advance Auto parts will scan and retrieve any diagnostic trouble codes stored in the powertrain control module for free of charge..
  
  2. Amazon.com has the code reader for less than $21.00 dollars.
  
  3.Re-post the dtc's in here " answer question " and we will advise the repair.
  
  Note: we need the dtc's to identify the sensor, there're a dozen different sensors to operate the car and we can't do with a guesswork.
  
  Visit this site and see all the sensors.
  
  http://www.freeautomechanic.com/car-engine-sensors.html
  
  Navigate to this site and see the code reader
  
  http://www.amazon.com/.../ref=sr_1_1

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