1999 Oldsmobile Alero Logo
Anonymous Posted on Aug 04, 2011

Need to know where the spark plug wires go on the coil pack

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Jonah Oneal

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  • Oldsmobile Master 14,092 Answers
  • Posted on Aug 05, 2011
Jonah Oneal
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WHAT SIZE ENGINE 2.4L 3.4L OR 3.1L NEED TO KNOW. BECAUSE EACH ENGINE SPARK PLUG WIRE FROM IGNITION COIL TO SPARK PLUGS TO THE ENGINE PLUGS GOING TO BE IN DIFFERENT SEQUENCES.

  • Jonah Oneal Aug 05, 2011

    LOOK ON TOP OF ENGINE THE TOP ENGINE COVER OR INTAKE PLENUM WILL TELL YOU.IF YOU HAVE 3.1 YOU WILL SEE 3100 ON TOP INTAKE IF YOU HAVE 2.4 YOU WIL SEE 2.4L TOP OF ENGINE COVER.

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so he does not know his job , that it?
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The Coil Pack is located under the Plastic on top of your Engine and Directly connects to the Spark Plug. If I was you I would Swap the #1 and #3 Coil Packs and see if the Fault Code follows the Coil Pack. If it does then replace the Coil Pack. If it stays with the Cylinder, I would be checking the Connectors, Wires, Injector and Spark Plug.
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Removal & Installation
  1. Disconnect the negative battery cable.
  2. Label and disconnect the spark plug wires from each of the coil pack towers.
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Ignition coil removal—2.4L engine

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Ignition coil removal—3.3L and 3.8L engines


  1. Disengage the electrical connector from the ignition coil pack.
  2. Remove the coil pack mounting fasteners.
  3. Remove the coil pack from the vehicle. If equipped, remove the coil pack from the mounting bracket.
To install:
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  3. Plug in the electrical connector to the ignition coil pack.
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  5. Connect the negative battery cable.
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http://shop.advanceautoparts.com/webapp/wcs/stores/servlet/partlist_Ignition-Coil_190_R%7CGRPTUNEAMS__coil___
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1. Get an INSULATED wire and hook it to a ground on the car.
2. Get some one to help you
3. pull a spark plug wire off the coil
4. hold grounded wire close to, but not touching, the part where the spark plug wire connects
5. keep hands away from coil and have your helper turn the engine over ( start car and turn off)
6. if there was a spark between the wire and the coil pack it is good. if not, the coil pack needs replaced
7. replace the spark plug wire
8. test the rest
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