Slips In 1ST Gear

1. Check engine idle speed.
2. Incorrect oil level.
3. Incorrect shift linkage adjustment.
4. Incorrect vacuum hose routing.
5. Abnormal hydraulic pressure.
6. Faulty vacuum diaphragm and rod.
7. Faulty oil pump.
8. Faulty torque converter.
9. Faulty control valve.
10. Damaged low reverse brake.
11. Damaged band servo and brake servo.
12. Damaged rear clutch.