The 2003 Acura RSX features two manual transmission options: a 5-speed manual for the base model and a 6-speed close-ratio manual for the Type-S model. Both transmissions are front-wheel drive with cable-actuated shift mechanisms, helical-cut gears, and synchronized forward gears. The 6-speed Type-S transmission includes a limited-slip differential for improved traction. Below are key sections covering specifications, operation, maintenance, troubleshooting, and technical details.
Key components: Aluminum alloy housing, cable shifter mechanism, synchronizer rings, shift forks, and differential assembly.
| Feature | Description |
|---|---|
| Transmission Type | 5-speed manual (Base) / 6-speed manual (Type-S) |
| Differential | Open differential (Base) / Helical limited-slip (Type-S) |
| Shift Mechanism | Cable-actuated with rod linkage |
| Gear Type | Helical-cut forward gears, straight-cut reverse |
| Synchronizers | Double-cone 1st-2nd, single-cone 3rd-6th |
| Final Drive Ratio | 4.388 (Base) / 4.764 (Type-S) |
| Fluid Capacity | 1.9 quarts (1.8 liters) |
| Fluid Type | Honda MTF or equivalent 10W-30 motor oil |
| Weight | Approximately 85 lbs (38.5 kg) |
| Case Material | Aluminum alloy |
Detailed gear ratios for both 5-speed and 6-speed transmissions:
| Gear | 5-Speed Ratio | 6-Speed Ratio |
|---|---|---|
| 1st | 3.266 | 3.266 |
| 2nd | 1.900 | 2.130 |
| 3rd | 1.360 | 1.517 |
| 4th | 1.034 | 1.147 |
| 5th | 0.787 | 0.921 |
| 6th | N/A | 0.738 |
| Reverse | 3.583 | 3.583 |
Note: 6-speed transmission features closer ratios for improved acceleration and performance.
Proper manual transmission operation techniques:
WARNING! Do not rest hand on shifter while driving. Avoid aggressive shifting when transmission is cold.
CAUTION! Do not use automatic transmission fluid or gear oil.
Regular maintenance ensures optimal transmission performance and longevity.
| Service | Interval | Procedure |
|---|---|---|
| Fluid Inspection | Every 7,500 miles | Check level and condition |
| Fluid Change | 30,000 miles / 2 years | Drain and refill with new fluid |
| Clutch Fluid | 15,000 miles | Check reservoir level |
| Shift Linkage | 15,000 miles | Lubricate pivot points |
| Clutch System | 30,000 miles | Inspect clutch wear and hydraulic system |
Optimal shifting practices for smooth operation and extended transmission life.
Tip: The 6-speed transmission has a shorter throw and more precise feel than the 5-speed.
The clutch system works in conjunction with the manual transmission for gear engagement.
| Component | Specification |
|---|---|
| Clutch Type | Single dry disc with diaphragm spring |
| Actuation | Hydraulic with concentric slave cylinder |
| Fluid Type | DOT 3 or DOT 4 brake fluid |
| Pedal Free Play | 0.4-0.8 inches (10-20mm) |
| Master Cylinder | 5/8 inch bore diameter |
| Slave Cylinder | Integrated with release bearing |
WARNING! Do not ride the clutch pedal. Replace clutch components as a set.
Known issues with 2003 Acura RSX manual transmissions:
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| Difficulty shifting into gear | Low fluid, worn clutch, linkage issue | Check fluid level, inspect clutch system, adjust linkage |
| Grinding noise when shifting | Worn synchronizers, low fluid | Change fluid, inspect synchronizers |
| Transmission pops out of gear | Worn shift fork, damaged gear teeth | Inspect internal components, replace as needed |
| Whining noise in all gears | Worn bearings, low fluid | Check fluid level, inspect bearings |
| Fluid leakage | Worn seals, loose drain plug | Identify leak source, replace seals, tighten plugs |
| Vibration during acceleration | Worn CV joints, engine mounts | Inspect CV axles and engine mounts |
Original warranty coverage for 2003 Acura RSX transmission components:
Service: Contact Acura client service at 1-800-382-2238 or visit www.acura.com for warranty claims.