Acura TSX Manual Transmission 2004

The 2004 Acura TSX with manual transmission features a 2.4-liter i-VTEC 4-cylinder engine producing 200 horsepower, paired with a 6-speed close-ratio manual gearbox. This sport sedan offers precise shifting, helical-type limited-slip differential, drive-by-wire throttle system, and sport-tuned suspension for exceptional driving dynamics. Below are key sections covering specifications, operation, maintenance, and troubleshooting.

1. Transmission Specifications 2. Gear Ratios and Performance 3. Shifting Operation 4. Clutch System 5. Maintenance Schedule 6. Fluid Requirements 7. Common Issues 8. Troubleshooting 9. Warranty Information

Transmission Specifications

The 6-speed manual transmission features close-ratio gearing for optimal performance across the power band.

Component	Specification
Transmission Type	6-speed manual, front-wheel drive
Gear Ratios	1st: 3.266, 2nd: 1.888, 3rd: 1.212, 4th: 0.886, 5th: 0.657, 6th: 0.520
Final Drive Ratio	4.764:1
Reverse Ratio	3.583:1
Clutch Type	Hydraulic, single dry disc with diaphragm spring
Shift Mechanism	Direct cable-operated with short-throw design
Synchromesh	Carbon-lined, triple-cone (1st/2nd), double-cone (3rd/4th)
Limited Slip	Helical-type torque-sensing differential
Fluid Capacity	2.2 quarts (2.1 liters) MTF

Gear Ratios and Performance

Optimized gear ratios provide strong acceleration and efficient highway cruising.

1st Gear: 3.266 - Maximum acceleration from standstill
2nd Gear: 1.888 - Smooth transition for city driving
3rd Gear: 1.212 - Optimal for passing maneuvers
4th Gear: 0.886 - Balanced performance and efficiency
5th Gear: 0.657 - Highway cruising with good response
6th Gear: 0.520 - Maximum fuel economy at highway speeds
Redline: 7100 RPM with fuel cut-off protection
Shift Points: Recommended at 6500 RPM for maximum performance

Shifting Operation

Proper shifting technique ensures smooth operation and extends transmission life.

Starting: Depress clutch fully, shift to 1st gear, release clutch smoothly while applying throttle.
Upshifting: Lift throttle, depress clutch, shift to next higher gear, release clutch while applying throttle.
Downshifting: Depress clutch, shift to lower gear, blip throttle to match engine speed, release clutch.
Reverse: Come to complete stop, depress clutch, lift reverse lockout collar, shift into reverse.
Skip-shifting: Direct shifts (e.g., 2nd to 4th) permitted for fuel economy.

WARNING! Do not rest hand on shift lever while driving; avoid forced shifts without clutch fully depressed.

Clutch System

Hydraulic clutch system requires minimal maintenance but proper operation.

Component	Specification
Clutch Type	215mm single dry disc with diaphragm spring
Pedal Free Play	0.4-0.8 inches (10-20mm) at pedal pad
Fluid Type	DOT 3 or DOT 4 brake fluid
Master Cylinder	5/8-inch bore diameter
Slave Cylinder	3/4-inch bore diameter
Clutch Life Expectancy	60,000-100,000 miles with proper use

CAUTION! Avoid riding clutch pedal; do not use clutch to hold vehicle on inclines.

Maintenance Schedule

Regular maintenance ensures optimal performance and longevity.

Every 30,000 miles: Inspect clutch fluid level and condition
Every 60,000 miles: Replace manual transmission fluid
Every 15,000 miles: Inspect shift linkage and cables
Every 7,500 miles: Check clutch pedal free play and adjustment
As needed: Inspect for fluid leaks at seals and connections

Recommended Fluid: Honda/Acura Manual Transmission Fluid (MTF) or equivalent

Fluid Requirements

Proper fluid selection critical for transmission performance and durability.

Transmission Fluid: Honda/Acura MTF or equivalent 75W-80 GL-4 gear oil
Capacity: 2.2 quarts (2.1 liters) - drain and refill
Clutch Fluid: DOT 3 or DOT 4 brake fluid
Change Interval: 60,000 miles or 5 years under normal conditions
Severe Service: 30,000 miles for frequent stop-and-go or performance driving

WARNING! Do not use automatic transmission fluid or GL-5 gear oil in manual transmission.

Common Issues

Typical concerns with 2004 TSX manual transmission and solutions.

Issue	Description	Frequency
3rd gear grind	Synchronizer wear causing difficult engagement	Common after 80,000 miles
Clutch shudder	Vibration during engagement from hot spots on flywheel	Moderate
Shift cable wear	Stiff shifting from cable deterioration	Common in cold climates
Reverse lockout	Difficulty engaging reverse gear	Occasional
Transmission noise	Bearing wear causing whining in specific gears	Rare before 100,000 miles

Troubleshooting

Symptom	Possible Cause	Corrective Action
Difficulty shifting into gear	Low clutch fluid, worn clutch, hydraulic issues	Check fluid level, bleed system, inspect clutch components
Gear grinding during shifts	Worn synchronizers, incorrect fluid	Replace transmission fluid, inspect synchronizers
Clutch pedal feels soft/spongy	Air in hydraulic system, master cylinder failure	Bleed clutch system, replace master cylinder if needed
Vibration during clutch engagement	Warped pressure plate or flywheel	Resurface or replace flywheel, replace clutch assembly
Transmission whining noise	Worn bearings, low fluid level	Check fluid level, inspect bearings for wear
Stuck in gear	Shift linkage issues, internal transmission damage	Inspect shift cables and linkage, internal inspection if needed

Warranty Information

Original warranty coverage for 2004 Acura TSX manual transmission.

Basic Warranty: 4 years/50,000 miles from original purchase date
Powertrain Warranty: 5 years/60,000 miles (transmission included)
Emissions Warranty: 2 years/24,000 miles (federal), 7 years/70,000 miles (California)
Corrosion Warranty: 5 years/unlimited miles
Transferable: Yes, to subsequent owners

Service Contacts: Acura Client Relations: 1-800-382-2238, www.acura.com