2004 Mercury Grand Marquis

Introduction:

The 2004 Mercury Grand Marquis is a full-size luxury sedan known for its spacious interior, powerful V8 engine, and comfortable ride. It comes with two engine options: a 4.6L V8 and a 5.4L V8. Both engines are mated to a 4-speed automatic transmission.

Engine:

4.6L V8

• Intake Manifold Gasket Failure:
  • Description/Symptoms: Coolant leaks from the intake manifold gasket, leading to overheating, rough idling, and reduced power.
  • Solution: Replace the intake manifold gasket.
  • Estimated Cost to Fix: $300 - $600+
  • Recalls: None Found

5.4L V8

• Spark Plug Blowout:
  • Description/Symptoms: One or more spark plugs can blow out of the cylinder head, causing misfires, rough idling, and decreased power.
  • Solution: Replace the damaged spark plug and inspect the cylinder head for damage.
  • Estimated Cost to Fix: $200 - $500+
  • Recalls: None Found

Transmission:

4-Speed Automatic Transmission

• TCC Solenoid Failure:
  • Description/Symptoms: The Torque Converter Clutch (TCC) solenoid can fail, leading to shuddering, slipping, or delayed engagement of the transmission.
  • Solution: Replace the TCC solenoid.
  • Estimated Cost to Fix: $400 - $700+
  • Recalls: None Found

Suspension:

• Front Strut Mount Bearing Failure:
  • Description/Symptoms: The front strut mount bearings can fail, causing clunking noises, vibration in the steering wheel, and reduced suspension performance.
  • Solution: Replace the strut mount bearings.
  • Estimated Cost to Fix: $200 - $500+
  • Recalls: None Found

Electrical:

• Alternator Failure:
  • Description/Symptoms: The alternator can fail, leading to a loss of electrical power, dimming lights, and difficulty starting the vehicle.
  • Solution: Replace the alternator.
  • Estimated Cost to Fix: $400 - $800+
  • Recalls: None Found

Exterior:

• Body Panel Rust:
  • Description/Symptoms: Rust can form on the body panels, particularly around the wheel arches, bumpers, and rocker panels.
  • Solution: Remove the rust and apply a rust-resistant coating.
  • Estimated Cost to Fix: $500 - $1500+
  • Recalls: None Found

Interior:

• Dashboard Cracking:
  • Description/Symptoms: The dashboard can develop cracks, especially on the passenger side.
  • Solution: Replace the dashboard or repair it with epoxy.
  • Estimated Cost to Fix: $500 - $1000+
  • Recalls: None Found

Summary:

The 2004 Mercury Grand Marquis has several potential issues, but they are generally minor and relatively inexpensive to fix. The most common problems are related to the engine and transmission, such as intake manifold gasket failure, spark plug blowout, and TCC solenoid failure. However, the overall reliability of the vehicle is still considered to be above average for its class.