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Pontiac
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1993
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Grand AM L4-138 2.3L VIN A MFI
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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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2-3 Shift Rough or Delayed
2-3 Shift Rough or Delayed
1. Plugged accumulator exhaust port.
2. Direct clutch exhaust No. 1 check ball mispositioned or missing.
3. Control valve assembly:
a.
Binding plunger and
throttle valve
.
b.
Binding shift TV valve.