LEMON Manuals
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Cadillac
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1990
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Seville Base, 440T4/ME9
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Repair and Diagnosis
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Engine Performance
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System
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Engine Controls - Tests W/Codes
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ECM Trouble Code Charts
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ECM Code EO42: Left O2 Sensor Lean Signal
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Failure Conditions:
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Failure Conditions:
Oxygen sensor status stays lean for more than 50 seconds.