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Cadillac
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1999
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DeVille Concours V8-4.6L VIN 9
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Repair and Diagnosis
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Powertrain Management
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Scan Tool Testing and Procedures
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Desired Idle Speed
Desired Idle Speed
Display shows the
idle speed
that is commanded by the
PCM
. The PCM will compensate for various engine loads to keep the engine at the desired idle speed from
0 to 2040 RPM
.