2004 Ford Mustang

Here’s a breakdown of common issues and complaints related to the 2004 Ford Mustang, formatted as requested. The 2004 Ford Mustang marked the final year of the “SN95” generation and featured a blend of classic styling with modern performance for the time. Two main engine options were available: a 3.8L Essex V6 producing around 193 horsepower and 225 lb-ft of torque, and a 4.6L Modular V8 producing around 260 horsepower and 302 lb-ft of torque. Both engines were available with either a 5-speed manual or a 4-speed automatic transmission. Owners generally appreciate the Mustang’s affordability, iconic styling, and potential for customization. Common dislikes include the sometimes-dated interior, lower fuel economy compared to some rivals, and the handling limitations of the solid rear axle, especially in V6 models.

Engine

3.8L Essex V6

• Intake Manifold Cracking
  • Description/Symptoms: Coolant leak, overheating, white smoke from exhaust, engine misfire.
  • Solution: Replacement of the intake manifold.
  • Estimated Cost to Fix: $300 - $600+
  • Recalls: None Found
• Lower Intake Manifold Gasket Failure
  • Description/Symptoms: Coolant leak, overheating, engine misfire, rough idle.
  • Solution: Replacement of the lower intake manifold gasket.
  • Estimated Cost to Fix: $200 - $400+
  • Recalls: None Found

4.6L Modular V8

• Spark Plug Blowout
  • Description/Symptoms: Loud popping sound, engine misfire, loss of power. The aluminum cylinder heads can experience spark plug thread failure.
  • Solution: Repair of spark plug threads (e.g., with a thread insert kit) or replacement of the cylinder head.
  • Estimated Cost to Fix: $100 - $800+ (depending on repair method)
  • Recalls: None Found
• Idle Air Control (IAC) Valve Failure
  • Description/Symptoms: Rough idle, stalling, especially at low speeds or when coming to a stop.
  • Solution: Replacement of the IAC valve.
  • Estimated Cost to Fix: $100 - $200+
  • Recalls: None Found

Transmission

4-Speed Automatic (4R70W)

• Delayed or Harsh Shifting
  • Description/Symptoms: Hesitation when shifting gears, jarring shifts, slipping between gears.
  • Solution: Fluid flush, valve body repair/replacement, or complete transmission rebuild/replacement.
  • Estimated Cost to Fix: $100 (fluid flush) - $2,000+ (rebuild/replacement)
  • Recalls: None Found
• Torque Converter Failure
  • Description/Symptoms: Shuddering at highway speeds, difficulty maintaining speed uphill.
  • Solution: Torque converter replacement.
  • Estimated Cost to Fix: $500 - $1,000+
  • Recalls: None Found

Suspension

• Rear Suspension Sag
  • Description/Symptoms: The rear of the car sits noticeably lower than the front, leading to a harsher ride and reduced handling performance.
  • Solution: Replacement of rear coil springs.
  • Estimated Cost to Fix: $300 - $600+
  • Recalls: None Found
• Worn Ball Joints
  • Description/Symptoms: Clunking or rattling noise from the front suspension, especially when going over bumps. Loose steering, uneven tire wear.
  • Solution: Replacement of worn ball joints.
  • Estimated Cost to Fix: $200 - $500+ per side
  • Recalls: None Found

Electrical

• Power Window Motor Failure
  • Description/Symptoms: Window operates slowly or not at all, clicking sound from the door panel.
  • Solution: Replacement of the power window motor.
  • Estimated Cost to Fix: $150 - $300+ per window
  • Recalls: None Found
• Alternator Failure
  • Description/Symptoms: Dimming headlights, battery warning light, difficulty starting, complete electrical failure.
  • Solution: Replacement of the alternator.
  • Estimated Cost to Fix: $200 - $400+
  • Recalls: None Found

Exterior

• Fog Light Housing Cracking
  • Description/Symptoms: Cracks appearing in the plastic fog light housings, often due to UV exposure or impacts.
  • Solution: Replacement of fog light assemblies.
  • Estimated Cost to Fix: $50 - $200+ per fog light
  • Recalls: None Found
• Side Mirror Issues
  • Description/Symptoms: Loose or broken side mirrors.
  • Solution: Replacement of side mirrors
  • Estimated Cost to Fix: $100 - $300+ per mirror
  • Recalls: None Found

Interior

• Instrument Cluster Issues
  • Description/Symptoms: Gauges not working or displaying incorrect readings, backlighting failing.
  • Solution: Instrument cluster repair or replacement.
  • Estimated Cost to Fix: $200-$500+
  • Recalls: None Found
• Center Console Lid Latch Failure
  • Description/Symptoms: The center console lid latch breaks, preventing the lid from staying closed.
  • Solution: Replacement of the latch or the entire center console lid.
  • Estimated Cost to Fix: $20 - $100+ (depending on the repair method)
  • Recalls: None Found

Summary

The 2004 Ford Mustang, while generally a reliable vehicle, can experience issues related to its age and the wear and tear of components. Engine issues, particularly with the V6 intake manifold and V8 spark plugs, can be relatively common and costly. Transmission problems, especially with the automatic, can lead to significant repair bills. Suspension and electrical issues are also to be expected in a vehicle of this age. It is recommended to thoroughly inspect any potential purchase and address any identified issues promptly to ensure reliable and enjoyable ownership.