2004 Acura TSX Manual Transmission

The 2004 Acura TSX features a 6-speed manual transmission with close-ratio gearing, smooth shift action, and precise clutch engagement. This sport sedan's transmission is designed for responsive performance and engaging driving dynamics, paired with a 2.4-liter i-VTEC engine producing 200 horsepower. Below are key sections for operation, maintenance, specifications, and troubleshooting.

1. Transmission Features 2. Operation Guidelines 3. Maintenance Schedule 4. Technical Specifications 5. Fluid Requirements 6. Shift Pattern 7. Clutch System 8. Common Issues 9. Service Procedures 10. Warranty Information 11. Troubleshooting

Transmission Features

Key components: 6-speed manual gearbox, hydraulic clutch system, short-throw shifter, and synchronized gears.

Feature	Description
Gear Ratios	Close-ratio design for optimal acceleration
Shift Mechanism	Short-throw shifter for precise gear changes
Clutch Type	Hydraulic actuation with self-adjusting mechanism
Synchromesh	Carbon-lined synchronizers for smooth shifting
Final Drive Ratio	4.764:1 for responsive acceleration
Transmission Fluid	Honda MTF for optimal performance
Shift Linkage	Cable-operated for precise feel
Reverse Lockout	Requires lifting collar to engage reverse
Gear Positions	6 forward gears, 1 reverse
Case Material	Aluminum alloy for weight reduction

Operation Guidelines

Proper shifting techniques and clutch operation for optimal performance and longevity.

Clutch Engagement: Fully depress clutch pedal before shifting gears.
Smooth Shifting: Apply gentle pressure when moving shifter between gears.
Rev Matching: Match engine RPM when downshifting for smoother transitions.
Reverse Gear: Always come to complete stop before engaging reverse.

WARNING! Do not rest hand on shifter while driving; avoid aggressive shifting when transmission is cold.

Maintenance Schedule

Regular maintenance ensures optimal transmission performance and longevity.

Transmission Fluid: Replace every 30,000 miles or 2 years.
Clutch Fluid: Check and replace every 3 years or 45,000 miles.
Shift Linkage: Inspect for wear every 15,000 miles.
Clutch System: Check pedal free play every 10,000 miles.

CAUTION! Use only recommended Honda MTF fluid; improper fluids can damage synchronizers.

Technical Specifications

Transmission Type: 6-speed manual
Gear Ratios: 1st: 3.266, 2nd: 1.888, 3rd: 1.321, 4th: 1.034, 5th: 0.825, 6th: 0.658, Reverse: 3.583
Final Drive: 4.764:1
Clutch Type: 225mm single dry plate with diaphragm spring
Fluid Capacity: 2.2 quarts (2.1 liters)
Fluid Type: Honda Manual Transmission Fluid (MTF)
Shift Pattern: H-pattern with reverse left and up
Weight: 98 lbs (44.5 kg) including fluid

Fluid Requirements

Proper fluid selection and maintenance for transmission longevity.

Recommended Fluid: Honda Manual Transmission Fluid (MTF)

Capacity: 2.2 quarts (2.1 liters) when dry

Change Interval: Every 30,000 miles or 2 years under normal conditions

Severe Service: Every 15,000 miles for track use or heavy towing

Shift Pattern

Standard H-pattern shift layout with reverse lockout feature.


Reverse	1st	3rd	5th
	2nd	4th	6th

Note: Lift reverse lockout collar to engage reverse gear. Always come to complete stop before shifting into reverse.

Clutch System

Hydraulic clutch system with self-adjusting mechanism and wear compensation.

Clutch Pedal: Hydraulic actuation with consistent feel
Master Cylinder: Integrated with brake fluid reservoir
Slave Cylinder: External type mounted on transmission case
Clutch Disc: 225mm diameter with dampening springs
Pressure Plate: Diaphragm spring design for smooth engagement

Tip: Clutch pedal free play should be 0.4-0.8 inches (10-20mm) at pedal pad.

Common Issues

Typical problems and their causes for the 2004 TSX manual transmission.

Grinding when shifting: Worn synchronizers or low fluid
Difficulty shifting: Damaged shift cables or linkage
Clutch slippage: Worn clutch disc or pressure plate
Fluid leaks: Damaged seals or loose drain/fill plugs
Noise in neutral: Worn input shaft bearing

Service Procedures

Basic maintenance procedures for transmission care.

Fluid Change: Remove fill plug first, then drain plug
Clutch Bleeding: Use pressure bleeder for best results
Shift Cable Adjustment: Ensure precise gear engagement
Clutch Replacement: Requires transmission removal

WARNING! Transmission service should be performed by qualified technicians only.

Warranty Information

Original warranty coverage and extended protection options.

Basic Warranty: 4 years/50,000 miles from original purchase date

Powertrain Coverage: Transmission covered under powertrain warranty

Service Network: Authorized Acura dealerships nationwide

For warranty claims and service information, contact Acura Client Relations at 1-800-382-2238 or visit www.acura.com.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Grinding when shifting	Low fluid/worn synchros	Check fluid level; replace if contaminated; inspect synchronizers
Difficulty engaging gears	Clutch not disengaging	Bleed clutch system; check master/slave cylinders
Transmission noise	Low fluid/bearing wear	Check fluid level; inspect bearings for wear
Clutch slippage	Worn clutch components	Replace clutch disc and pressure plate
Fluid leaks	Damaged seals/plugs	Replace seals; tighten drain/fill plugs to specification

Service: Contact authorized Acura dealer for professional diagnosis and repair.

Support: 1-800-382-2238; www.acura.com