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Home >> Buick >> 1984 >> LeSabre V6-231 3.8L VIN A 2-bbl >> Repair and Diagnosis >> Transmission and Drivetrain >> Automatic Transmission/Transaxle >> Testing and Inspection >> Symptom Related Diagnostic Procedures >> 200-R4 Automatic Transmission >> Rough 3-4 Shift

Rough 3-4 Shift

1. Check for improperly positioned or missing throttle valve cable.

2. Inspect throttle valve and plunger for binding.

3. Inspect throttle valve limit valve for binding.

4. Check for 3-4 accumulator piston stuck or bore damage.

5. Check for fourth clutch piston binding.