Brad's Car Manuals
: A 3rd party mirror of CHARM + LEMON car manuals
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Saturn
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2003
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Ion 1 Automatic
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Repair and Diagnosis
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Engine Performance
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System
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Engine Controls - Trouble Shooting
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Symptoms
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Engine Backfires
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Preliminary Checks
Preliminary Checks
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Perform
PRELIMINARY INSPECTION
.
Search for Technical Service Bulletins (TSBs).
Check the Engine Control Module (ECM) grounds for being clean, tight, and in the proper locations.