2004 Mitsubishi Lancer

2004 Mitsubishi Lancer

Overview

The 2004 Mitsubishi Lancer, a compact car known for its sporty styling and affordable price point, offered a range of engine and transmission options to cater to different driving preferences. While generally considered a reliable vehicle for its segment, like any car, it has specific areas that have seen more frequent reports of issues. This analysis focuses on documented technical reliability concerns beyond routine maintenance, providing insights into potential problem areas for owners and prospective buyers of the 2004 model year. Understanding these common issues can help in proactive maintenance and informed purchasing decisions.

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Engine

2.0L 4G63 (Naturally Aspirated)

Head Gasket Failure

• Symptoms: Overheating, coolant loss, white smoke from exhaust, milky oil.
• Solution: Replacement of the head gasket.
• Cost: $800 - $1500

Oil Leaks

• Symptoms: Visible oil spots under the vehicle, burning oil smell, low oil level.
• Solution: Replacement of seals and gaskets (e.g., valve cover gasket, oil pan gasket).
• Cost: $200 - $600

2.0L Turbo 4G63T (Evolution Models)

Turbocharger Failure

• Symptoms: Loss of power, excessive smoke, whining noise from turbo, boost leaks.
• Solution: Rebuild or replacement of the turbocharger.
• Cost: $1000 - $2500

Connecting Rod Failure (High Mileage/Aggressive Driving)

• Symptoms: Knocking sound from engine, severe engine damage.
• Solution: Engine rebuild or replacement.
• Cost: $3000+

2.4L 4G69 (Naturally Aspirated)

Timing Belt Tensioner Failure

• Symptoms: Rattling noise from the front of the engine, potential for valve damage if belt slips.
• Solution: Replacement of the timing belt tensioner and belt.
• Cost: $400 - $700

Transmission

5-Speed Manual

Clutch Wear

• Symptoms: Slipping clutch, difficulty shifting gears, burning smell.
• Solution: Replacement of the clutch kit (clutch disc, pressure plate, release bearing).
• Cost: $600 - $1000

Synchronizer Issues

• Symptoms: Grinding noise when shifting, difficulty engaging gears.
• Solution: Transmission internal repair or rebuild.
• Cost: $1000 - $2000

4-Speed Automatic

Torque Converter Issues

• Symptoms: Slipping, shuddering, delayed engagement, overheating transmission fluid.
• Solution: Replacement or rebuild of the torque converter.
• Cost: $700 - $1200

Transmission Control Module (TCM) Failure

• Symptoms: Erratic shifting, transmission warning light, limp mode.
• Solution: Replacement of the TCM.
• Cost: $400 - $800

Suspension

Standard Chassis

Worn Control Arm Bushings

• Symptoms: Clunking noises over bumps, vague steering feel, uneven tire wear.
• Solution: Replacement of control arm bushings or entire control arm assembly.
• Cost: $300 - $600

Strut Mount Bearing Failure

• Symptoms: Popping or creaking noise when turning the steering wheel at low speeds.
• Solution: Replacement of strut mount bearings.
• Cost: $150 - $300

Electrical

General Electrical System

Alternator Failure

• Symptoms: Dimming headlights, battery warning light, dead battery.
• Solution: Replacement of the alternator.
• Cost: $400 - $700

Window Regulator Failure

• Symptoms: Power windows not operating, slow window movement, grinding noise.
• Solution: Replacement of the window regulator mechanism.
• Cost: $200 - $400

Exterior

Body Panels & Trim

Rusting (Wheel Arches, Rocker Panels)

• Symptoms: Visible corrosion, bubbling paint, holes in body panels.
• Solution: Rust repair and repainting, rustproofing.
• Cost: $300 - $1000+

Interior

Interior Components

HVAC Blower Motor Failure

• Symptoms: No air coming from vents, intermittent fan speed, strange noises from dashboard.
• Solution: Replacement of the HVAC blower motor.
• Cost: $200 - $400

Seat Fabric Wear

• Symptoms: Tearing or thinning of seat fabric, especially on driver’s side bolster.
• Solution: Seat cover replacement or professional upholstery repair.
• Cost: $100 - $500

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Summary Verdict

The 2004 Mitsubishi Lancer generally presents a decent reliability record for its class, particularly the naturally aspirated engine variants. Common issues tend to revolve around the engine’s head gasket and oil seals, as well as wear-and-tear items in the transmission and suspension, especially on higher-mileage examples. Electrical components like the alternator and window regulators can also be points of concern. For performance-oriented models (e.g., Evolution), the turbocharged engine and drivetrain require more diligent maintenance and can be prone to more significant failures if pushed hard or not properly cared for. Overall, with regular maintenance and attention to reported issues, the Lancer can be a dependable vehicle.