The Acura TL 2004 Manual Conversion involves converting the automatic transmission system to a manual transmission setup. This comprehensive guide covers the conversion process, required parts, installation procedures, and performance considerations for transforming your 2004 Acura TL into a manual transmission vehicle with improved driving dynamics and control.
Key components: Manual transmission assembly, clutch system, pedal assembly, shift linkage, ECU modifications, and supporting hardware.
| Component | Description |
|---|---|
| Manual Transmission | 6-speed manual gearbox compatible with 2004 TL |
| Clutch Assembly | Complete clutch kit including pressure plate and disc |
| Pedal Assembly | Manual clutch and brake pedal setup |
| Shift Linkage | Manual shifter mechanism and cables |
| Flywheel | Manual transmission compatible flywheel |
| ECU Module | Modified or replacement ECU for manual operation |
| Hydraulic System | Clutch master and slave cylinders |
| Transmission Mount | Manual transmission specific mounting hardware |
| Drive Shaft | Modified or replacement drive shaft |
| Wiring Harness | Modified wiring for manual operation |
Complete inventory of components needed for successful conversion.
WARNING! Ensure all parts are compatible with 2004 Acura TL specifications.
Essential tools for performing the conversion safely and efficiently.
CAUTION! Use proper lifting equipment; transmission is heavy.
Technical details of the manual transmission system.
Gear Ratios: 1st: 3.267, 2nd: 1.778, 3rd: 1.194, 4th: 0.966, 5th: 0.763, 6th: 0.634, Reverse: 3.583
Final Drive Ratio: 4.389
Transmission Fluid: Honda MTF or equivalent synthetic
Capacity: 2.2 quarts (2.1 liters)
Clutch Type: Hydraulic, single disc
Proper installation and adjustment of clutch components.
Tip: Test clutch operation before final assembly completion.
Electronic control unit programming and wiring adaptations.
WARNING! Proper ECU programming is critical for vehicle operation.
Verification procedures after conversion completion.
| Test | Procedure | Expected Result |
|---|---|---|
| Clutch Engagement | Start engine, depress clutch, shift gears | Smooth engagement, no grinding |
| Gear Selection | Shift through all gears stationary | Positive engagement, no resistance |
| Road Test | Drive through all gears under load | Smooth shifts, no slippage |
| Reverse Operation | Engage reverse gear | Clean engagement, backup lights functional |
| Clutch Pedal | Check free play and full disengagement | Proper pedal feel, complete disengagement |
Post-conversion maintenance schedule and procedures.
Clutch fluid: Check monthly, replace every 2 years
Transmission fluid: Replace every 30,000 miles
Shift linkage: Lubricate every 15,000 miles
Clutch system: Inspect every 10,000 miles
CAUTION! Use only recommended fluids for optimal performance.
Important safety protocols during and after conversion.
Always use jack stands when working under vehicle. Ensure transmission is properly secured during installation. Test brake function after pedal assembly modification. Verify all electrical connections are secure. Road test in safe, controlled environment initially.
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| Gear grinding | Clutch not disengaging fully | Bleed hydraulic system; adjust pedal |
| Difficulty shifting | Linkage misalignment | Adjust shift cables; check linkage |
| Clutch slippage | Worn components | Inspect clutch assembly; replace if needed |
| No reverse lights | Switch not connected | Check reverse light switch wiring |
| Vibration | Drive shaft imbalance | Balance drive shaft; check mounts |
Professional Assistance: Consult certified Acura technician for complex issues.
Support: Acura technical service line: 1-800-382-2238