Brad's Car Manuals
: A 3rd party mirror of CHARM + LEMON car manuals
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Cadillac
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1990
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Seville Base, 4T60/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 EO38: Open Mat Sensor Circuit
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Failure Conditions:
Failure Conditions:
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MAT sensor value less than 35°F (-37°C).