2004 Mitsubishi Endeavor

2004 Mitsubishi Endeavor

Overview

The 2004 Mitsubishi Endeavor is a mid-size SUV that offered a comfortable ride and a spacious interior for its time. It was primarily equipped with a 3.8L V6 engine paired with a 4-speed automatic transmission. While generally considered a decent vehicle for daily use and family transport, like any vehicle of this age, it has specific areas where owners have reported issues. This analysis focuses on common mechanical and electrical problems that go beyond routine maintenance, providing insights into potential reliability concerns for prospective buyers or current owners looking for repair guidance. Understanding these common failure points can help in proactive maintenance and budgeting for repairs.

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Engine

3.8L V6 (6G75)

Intake Manifold Gasket Leaks

• Symptoms: Coolant leaks, engine overheating, sweet smell of coolant, white smoke from exhaust.
• Solution: Replacement of the intake manifold gaskets.
• Cost: $400 - $700

Timing Belt Failure

• Symptoms: Sudden engine shutdown, loss of power, engine misfires, ticking noise from the engine.
• Solution: Replacement of the timing belt, tensioner, and idler pulleys. If the belt breaks, valve and piston damage may occur, requiring more extensive engine repair.
• Cost: $600 - $1000

Transmission

4-Speed Automatic (F4A51)

Transmission Slipping/Harsh Shifting

• Symptoms: Delayed engagement, slipping between gears, harsh shifts, transmission warning light.
• Solution: Transmission fluid and filter change, solenoid replacement, or complete transmission rebuild/replacement.
• Cost: $500 - $2500+

Suspension

Standard Chassis

Worn Control Arm Bushings

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

Strut Mount Failure

• Symptoms: Popping or creaking noises when turning, especially at low speeds.
• Solution: Replacement of the strut mounts.
• Cost: $200 - $400

Electrical

Body Control Module (BCM)

BCM Malfunctions

• Symptoms: Intermittent power windows, door locks, interior lights, or dashboard warning lights not functioning correctly.
• Solution: Reprogramming or replacement of the Body Control Module.
• Cost: $500 - $1000

Alternator

Alternator Failure

• Symptoms: Dimming headlights, battery warning light illuminated, weak or dead battery, electrical components malfunctioning.
• Solution: Replacement of the alternator.
• Cost: $400 - $700

Exterior

Body Panels & Seals

Rusting Wheel Arches and Rocker Panels

• Symptoms: Visible rust and corrosion on lower body panels, especially in areas with harsh winters.
• Solution: Rust repair and repainting, or replacement of affected body panels.
• Cost: $300 - $1000+

Leaking Sunroof

• Symptoms: Water leaks into the cabin, water stains on the headliner, musty smell.
• Solution: Cleaning and clearing of sunroof drains, replacement of sunroof seals.
• Cost: $150 - $300

Interior

HVAC System

Blend Door Actuator Failure

• Symptoms: Inability to control temperature (stuck on hot or cold), air only blowing from certain vents.
• Solution: Replacement of the blend door actuator(s).
• Cost: $200 - $400

Seat Upholstery

Torn or Worn Seat Upholstery

• Symptoms: Tears, rips, or excessive wear on fabric or leather seats.
• Solution: Repair or replacement of seat covers.
• Cost: $200 - $600

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Summary Verdict

The 2004 Mitsubishi Endeavor, while offering a practical package, exhibits some common reliability concerns typical for its age and class. The 3.8L V6 engine can be prone to intake manifold gasket leaks and timing belt issues, which require attention to prevent more severe damage. The 4-speed automatic transmission may develop slipping or harsh shifting problems over time. Suspension components like control arm bushings and strut mounts are also noted for wear. Electrical issues, particularly with the alternator and Body Control Module, can lead to various system malfunctions. Exterior rust, especially in certain climates, and interior wear on upholstery and HVAC blend doors are also points to consider. Regular maintenance and addressing these specific issues promptly are key to maintaining the Endeavor’s reliability.