The 1990 Acura Integra features a reliable 5-speed manual transmission system designed for smooth shifting and durable performance. This manual covers essential components, maintenance procedures, and replacement parts for the manual transmission assembly. Below are key sections covering transmission specifications, component identification, maintenance procedures, and troubleshooting.
The 1990 Acura Integra manual transmission is a 5-speed forward, 1-reverse synchronized gearbox with hydraulic clutch operation.
| Specification | Details |
|---|---|
| Transmission Type | 5-speed manual, front-wheel drive |
| Gear Ratios | 1st: 3.307, 2nd: 1.750, 3rd: 1.172, 4th: 0.909, 5th: 0.702, Reverse: 3.000 |
| Final Drive Ratio | 4.266:1 |
| Clutch Type | Hydraulic, single dry disc |
| Fluid Capacity | 2.2 quarts (2.1 liters) |
| Fluid Type | Honda MTF or equivalent 10W-30 motor oil |
| Case Material | Aluminum alloy |
| Weight | Approximately 75 lbs (34 kg) |
Key transmission components include gear sets, synchronizers, shift linkage, clutch assembly, and hydraulic system.
NOTE: Always use genuine Acura parts or OEM equivalents for optimal performance.
Common replacement parts for the 1990 Acura Integra manual transmission system.
| Part Number | Description | Application |
|---|---|---|
| 22000-PR3-305 | Complete Transmission Assembly | Direct replacement |
| 22100-PR3-A01 | Clutch Disc | Standard replacement |
| 22300-PR3-005 | Pressure Plate Assembly | Clutch system |
| 22810-PR3-003 | Throwout Bearing | Clutch engagement |
| 23421-PR3-003 | Shift Lever Assembly | Gear selection |
| 46920-PR3-003 | Master Cylinder | Hydraulic clutch |
| 46930-PR3-003 | Slave Cylinder | Hydraulic clutch |
| 91213-PR3-003 | Transmission Mount | Vibration isolation |
Proper installation ensures transmission longevity and optimal performance.
WARNING! Use proper lifting equipment; transmission is heavy. Torque all bolts to factory specifications.
Regular maintenance ensures transmission reliability and longevity.
CAUTION! Use only recommended fluids to prevent transmission damage.
Common transmission problems and their solutions.
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| Difficulty shifting | Low fluid, worn synchronizers, clutch issues | Check fluid level, inspect clutch hydraulic system, replace synchronizers if needed |
| Grinding noises | Worn bearings, low fluid, damaged gears | Inspect transmission internals, replace damaged components |
| Clutch slippage | Worn clutch disc, hydraulic issues | Replace clutch components, bleed hydraulic system |
| Fluid leaks | Worn seals, cracked case | Replace input/output shaft seals, repair case damage |
| Vibration | Worn mounts, unbalanced components | Replace transmission mounts, inspect CV joints |
Detailed information about clutch system parts and maintenance.
NOTE: Always replace clutch components as a complete set for optimal performance.
Detailed gear ratio information and performance characteristics.
| Gear | Ratio | MPH per 1000 RPM | Recommended Shift Points |
|---|---|---|---|
| 1st | 3.307 | 5.2 mph | 6,500 RPM (32 mph) |
| 2nd | 1.750 | 9.8 mph | 6,500 RPM (62 mph) |
| 3rd | 1.172 | 14.6 mph | 6,500 RPM (93 mph) |
| 4th | 0.909 | 18.8 mph | 6,200 RPM (115 mph) |
| 5th | 0.702 | 24.4 mph | Redline 6,800 RPM (125 mph) |
| Reverse | 3.000 | 5.7 mph | Limited to 15 mph |
Proper lubrication is essential for transmission longevity and performance.
WARNING! Do not use gear oil or automatic transmission fluid in manual transmission.
Factory-issued technical updates and common repair procedures.
NOTE: Contact Acura dealership for latest technical service bulletins.
Warranty information and technical support resources.
REMINDER: Keep all maintenance records for warranty verification.