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Mercury
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1988
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Grand Marquis V8-302 5.0L VIN F FI
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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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Symptom Related Diagnostic Procedures
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No Forced Downshifts
No Forced Downshifts
NO FORCED DOWNSHIFTS
1.
Incorrectly adjusted or damaged throttle linkage.
2.
Oil pressure control system or improper clutch or
band
application.
3.
Dirty or sticking
governor
.
4.
Dirty valve body or sticking valves.