2000 Mitsubishi Diamante

The 2000 Mitsubishi Diamante is a mid-size sedan known for its comfortable ride and relatively luxurious features for its price point. It came equipped with a 3.5-liter V6 engine producing 205 horsepower and 231 lb-ft of torque. While owners appreciated its smooth engine and spacious interior, common complaints revolved around reliability issues and costly repairs.

Engine

3.5L V6

• Oil Leaks
  • Description/Symptoms: Oil leaks are common, especially from the valve cover gaskets and rear main seal. This can lead to oil consumption, low oil levels, and potential engine damage. Visible oil stains under the vehicle are a symptom.
  • Solution: Replace the leaking gaskets and seals. Regular monitoring of oil levels is also recommended.
  • Estimated Cost to Fix: $150 - $400+
• EGR Valve Failure
  • Description/Symptoms: The EGR (Exhaust Gas Recirculation) valve can become clogged or fail, leading to poor engine performance, rough idling, and a check engine light.
  • Solution: Replace the EGR valve.
  • Estimated Cost to Fix: $200 - $400+
• Knock Sensor Failure
  • Description/Symptoms: The knock sensor can fail, resulting in reduced engine performance and a check engine light.
  • Solution: Replace the knock sensor.
  • Estimated Cost to Fix: $200 - $400+

Transmission

Automatic Transmission (Specific Type Not Specified)

• Slipping/Harsh Shifting
  • Description/Symptoms: Transmission slippage, especially between gears, and harsh or delayed shifting are reported issues. This can worsen over time and lead to complete transmission failure.
  • Solution: Sometimes a fluid change can temporarily alleviate symptoms, but a transmission rebuild or replacement is often necessary.
  • Estimated Cost to Fix: $2000 - $4000+
• Torque Converter Failure
  • Description/Symptoms: Torque converter failure can cause shuddering, stalling, and poor acceleration.
  • Solution: Replace the torque converter.
  • Estimated Cost to Fix: $800 - $1500+

Suspension

• Strut Mount Failure
  • Description/Symptoms: Worn or damaged strut mounts can cause clunking noises, especially when going over bumps. It can also affect vehicle handling and tire wear.
  • Solution: Replace the strut mounts.
  • Estimated Cost to Fix: $200 - $500+
• Worn Control Arm Bushings
  • Description/Symptoms: Worn control arm bushings can lead to imprecise steering, clunking noises, and uneven tire wear.
  • Solution: Replace the control arm bushings or the entire control arm assembly.
  • Estimated Cost to Fix: $200 - $600+

Electrical

• Power Window Failure
  • Description/Symptoms: Power windows may fail to operate correctly, often due to faulty window regulators or motors.
  • Solution: Replace the faulty window regulator or motor.
  • Estimated Cost to Fix: $150 - $400+
• Alternator Failure
  • Description/Symptoms: The alternator may fail, resulting in a dead battery, dim headlights, and a check engine light.
  • Solution: Replace the alternator.
  • Estimated Cost to Fix: $200 - $500+

Exterior

• Rust
  • Description/Symptoms: Rust is a common issue, particularly in areas with road salt use. It often affects the undercarriage, rocker panels, and wheel wells.
  • Solution: Repair or replace rusted panels. Prevention includes regular washing and rustproofing treatments.
  • Estimated Cost to Fix: $300 - $1000+ per panel

Interior

• Dashboard Cracking
  • Description/Symptoms: The dashboard can crack, especially in vehicles exposed to high heat and sunlight.
  • Solution: Dashboard replacement is possible, but often expensive. Dashboard covers are a more affordable alternative.
  • Estimated Cost to Fix: $200 - $1000+

Recalls:

• 99V340000
• 00V178000

Summary

The 2000 Mitsubishi Diamante, while offering a comfortable and relatively luxurious ride, is prone to several reliability issues. Engine oil leaks, transmission problems, and electrical faults are among the most common complaints. Repairs can range from relatively inexpensive fixes like replacing gaskets to costly overhauls such as transmission replacements. Rust can also be a significant concern, especially in certain climates. Due to the age of the vehicle, finding replacement parts can be difficult. Potential buyers should carefully inspect the vehicle for these issues and budget accordingly for potential repairs.