Operation CHARM
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Porsche
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1990
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928 GT V8-4957cc 5.0L
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Repair and Diagnosis
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Transmission and Drivetrain
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Automatic Transmission/Transaxle
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Testing and Inspection
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Slips During 3RD/4TH Shift
Slips During 3RD/4TH Shift
1.
Incorrect modulating pressure.
2.
Damaged shift valve housing.
3.
Damaged inner clutch K2 plates.