In brief, the 2004 TSX is generally reliable but can develop a few age-related issues such as oil consumption or leaks, ignition coil wear, transmission quirks on automatic models, and electrical or HVAC nuisances. These problems show up across owners with varying mileage and maintenance histories.
As the inaugural year for the TSX, the model carries Honda’s reliable K24A2 2.4-liter engine and a well-regarded chassis, but buyers and owners should be mindful of typical wear and aging patterns. Below is a structured overview of the most commonly reported problems, what to look for, and how to address them.
Powertrain and engine concerns
Common engine and powertrain issues reported by owners of the 2004 TSX, with notes on symptoms and preventive steps.
- Oil consumption: Some K24A2 engines burn oil more rapidly as mileage climbs. Check oil level regularly, watch for rising consumption between changes, and look for blue exhaust smoke as a warning sign.
- Valve cover and other leaks: Valve cover gasket leaks and other seals can develop with age, leading to visible oil leaks around the engine bay.
- IMRC (Intake Manifold Runner Control) issues: IMRC solenoids or linkage can fail or stick, causing rough idle or reduced power at mid-to-high RPM.
- Ignition coils and spark plugs: Misfires from failing coils or worn plugs are common maintenance items around 90k–130k miles; coil and plug replacement is a typical fix.
- Timing chain tensioner and chain wear (rare): There are occasional reports of chain/tensioner wear producing unusual engine noise; while not universal, it can occur with high mileage.
Conclusion: Keeping oil at the proper level, monitoring IMRC operation, and replacing aging ignition components as needed can mitigate many engine-related complaints on the TSX.
Transmission and drivetrain
Overview of transmission behavior and drivetrain concerns, with guidance on what tends to show up as the car ages.
- Automatic transmission issues: The 5-speed automatic can exhibit rough or delayed shifting, slipping, or occasional shudder, particularly in higher-mileage examples.
- Clutch wear on manual transmissions: The 6-speed manual can show typical clutch wear with mileage or aggressive driving, necessitating periodic inspection and potential replacement.
- Transmission fluid leaks: Pan gaskets, seals, or cooler lines can develop leaks, leaving evidence of fluid under the vehicle or at the transmission sight.
- Torque converter or shifting irregularities: Some automatics experience harsh or inconsistent shifts, which may require transmission service or fluid changes.
Conclusion: For automatics, monitor shifting smoothness and service history; for manuals, plan for clutch maintenance as part of regular wear items.
Electrical, HVAC, and cabin systems
Electrical quirks and comfort-system issues that owners sometimes encounter, with practical pointers for diagnosis.
- Power window regulator failures: Regulator mechanisms can fail, causing windows to bind, drop, or refuse to move.
- A/C cooling issues and refrigerant leaks: Some units fail to blow cold air due to compressor problems or refrigerant leaks in the cooling system.
- SRS/airbag recall and sensor concerns: The TSX has been affected by broader airbag recalls; verify any open recalls and ensure airbag systems are up to date.
- Electrical gremlins in the dash or gauges: Age-related electrical glitches can affect gauges, lights, or electronic controls in the cabin.
- ABS and wheel-speed sensor warnings: Wheel-speed sensors or ABS modules can trigger warning lights; a diagnostic check can identify faulty sensors.
Conclusion: Electrical and HVAC components can show normal aging signs; confirm open recalls and review service history, especially for components like the A/C and power accessories.
Suspension, steering, and brakes
Wear-and-tear items in the front and rear suspension, steering, and braking systems that owners should inspect as the TSX ages.
- Power steering rack leaks: Seals can degrade over time, leading to fluid leaks and steering feel changes.
- Worn suspension components: Struts, mounts, bushings, and control arms may wear, causing clunks, creaks, or changes in ride quality.
- Brake wear and rotor concerns: Pads and rotors wear with mileage; warping or glazing of rotors can affect braking performance.
Conclusion: Regular inspection of steering/suspension and braking components is essential for safety and ride quality; replace worn parts promptly to maintain handling and stopping power.
Summary
The 2004 Acura TSX offers solid engineering and a pleasant driving experience, but like many aging vehicles, it accumulates a set of common issues. Oil consumption and leaks, IMRC and ignition-related concerns, and transmission behavior (especially in automatics) top the list, along with electrical/HVAC quirks and typical wear on suspension and brakes. Prospective buyers should obtain complete service records, inspect for leaks and wear, and verify that any outstanding recalls are addressed. Regular preventive maintenance can substantially extend the life of the vehicle and reduce the impact of these common problems.