Operation CHARM
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Oldsmobile
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1987
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Firenza L4-121 2.0L VIN 1 TBI
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Repair and Diagnosis
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Powertrain Management
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Ignition System
Ignition System
Fig. 1 DIS wiring schematic. 1987 4-121/2.0L Firenza & 1987-88 4-151/2.5L Calais & Cutlass Ciera w/TBI:
