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Cadillac
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1992
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DeVille Touring
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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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Pcm Trouble Code Diagnosis
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Pcm Code E74, Mat Sensor Signal Interrupt
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Failure Conditions
Failure Conditions
MAT signal change of 7 degrees or more in 250 milliseconds (.25 second).