2004 Mitsubishi Diamante

2004 Mitsubishi Diamante

The 2004 Mitsubishi Diamante is a midsize sedan that offers a comfortable and spacious interior, along with a powerful V6 engine. It is available with a choice of two engine options: a 3.5-liter V6 with 215 horsepower and 225 lb-ft of torque, and a 3.8-liter V6 with 263 horsepower and 260 lb-ft of torque. Both engines are mated to a 4-speed automatic transmission.

Despite its positive attributes, the 2004 Mitsubishi Diamante has been reported to have several issues that can affect its performance, reliability, and overall driving experience.

Engine

3.5-Liter V6

• Intake Manifold Gasket Failure
  • Description/Symptoms: Coolant leaks, overheating, poor engine performance
  • Solution: Replace the intake manifold gasket
  • Estimated Cost to Fix: $500 - $1,000
  • Recalls: None Found
• Timing Chain Tensioner Failure
  • Description/Symptoms: Engine rattle, decreased engine power, check engine light
  • Solution: Replace the timing chain tensioner
  • Estimated Cost to Fix: $600 - $1,200
  • Recalls: None Found

3.8-Liter V6

• No Issues Found

Transmission

4-Speed Automatic Transmission

• Transmission Slipping
  • Description/Symptoms: Difficulty shifting gears, shuddering, loss of power
  • Solution: Repair or replace the transmission
  • Estimated Cost to Fix: $1,500 - $3,000+
  • Recalls: None Found
• Torque Converter Failure
  • Description/Symptoms: Loss of power, overheating, check engine light
  • Solution: Replace the torque converter
  • Estimated Cost to Fix: $800 - $1,500
  • Recalls: None Found

Suspension

• Front Suspension Bushing Failure
  • Description/Symptoms: Clunking or rattling noises, poor handling, uneven tire wear
  • Solution: Replace the front suspension bushings
  • Estimated Cost to Fix: $200 - $400
  • Recalls: None Found
• Rear Shock Absorber Failure
  • Description/Symptoms: Reduced ride comfort, instability on uneven roads, excessive body roll
  • Solution: Replace the rear shock absorbers
  • Estimated Cost to Fix: $300 - $600
  • Recalls: None Found

Electrical

• Alternator Failure
  • Description/Symptoms: Dimming headlights, battery not charging, electrical component failure
  • Solution: Replace the alternator
  • Estimated Cost to Fix: $500 - $1,000
  • Recalls: None Found
• Starter Failure
  • Description/Symptoms: Engine cranks slowly or fails to start, clicking noise when turning the key
  • Solution: Replace the starter
  • Estimated Cost to Fix: $300 - $600
  • Recalls: None Found

Exterior

• Headlight Lens Fading
  • Description/Symptoms: Headlights appear cloudy or yellowed, reduced light output
  • Solution: Clean or replace the headlight lenses
  • Estimated Cost to Fix: $100 - $250
  • Recalls: None Found
• Door Lock Actuator Failure
  • Description/Symptoms: Difficulty locking or unlocking doors, power locks inoperable
  • Solution: Replace the door lock actuators
  • Estimated Cost to Fix: $200 - $400
  • Recalls: None Found

Interior

• Heater Core Failure
  • Description/Symptoms: Loss of heat, coolant leaks, musty smell
  • Solution: Replace the heater core
  • Estimated Cost to Fix: $500 - $1,000
  • Recalls: None Found
• Dashboard Panel Cracking
  • Description/Symptoms: Cracks or splits in the dashboard
  • Solution: Replace the dashboard panel
  • Estimated Cost to Fix: $300 - $600
  • Recalls: None Found

Summary

Overall, the 2004 Mitsubishi Diamante has received mixed reviews from owners. While it offers a comfortable and spacious interior, along with a powerful engine, it has been reported to have several issues that can affect its reliability, performance, and overall driving experience. Some of the more severe issues include intake manifold gasket failure, timing chain tensioner failure, and transmission slipping. The severity and cost of these issues can vary depending on the specific problem and the severity of the damage.