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Pontiac
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1999
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Grand AM L4-144 2.4L DOHC VIN T SFI
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Repair and Diagnosis
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Powertrain Management
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Ignition System
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Description and Operation
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Ignition Coils
Ignition Coils
Two separate coils are mounted inside the housing. Each coil provides the spark for two plugs simultaneously (waste spark distribution). Each coil can also be replaced separately.