2002 Jeep Wrangler

The 2002 Jeep Wrangler (TJ) is a rugged and iconic off-road vehicle known for its removable top and doors, solid front and rear axles, and simple, durable design. Engine options included a 2.5L inline-4 producing 120 horsepower and 140 lb-ft of torque, and a more popular 4.0L inline-6 generating 190 horsepower and 235 lb-ft of torque. Transmission choices were a 5-speed manual and a 3-speed automatic. Owners appreciate the Wrangler’s off-road capability, open-air driving experience, and customization options. Common dislikes include the rough ride, road noise, and limited cargo space.

Engine

2.5L Inline-4

• Cracked Exhaust Manifold
  • Description/Symptoms: Ticking noise, especially when cold, exhaust leak smell, reduced engine performance.
  • Solution: Replace the exhaust manifold.
  • Estimated Cost to Fix: $200 - $400+
  • Recalls: None Found

4.0L Inline-6

• Cracked Exhaust Manifold
  • Description/Symptoms: Ticking noise, especially when cold, exhaust leak smell, reduced engine performance.
  • Solution: Replace the exhaust manifold. Aftermarket headers are a common upgrade.
  • Estimated Cost to Fix: $200 - $400+
  • Recalls: None Found
• Oil Leaks (Valve Cover, Rear Main Seal)
  • Description/Symptoms: Visible oil leaks on the engine, oil spots on the ground, burning oil smell.
  • Solution: Replace the valve cover gasket or rear main seal.
  • Estimated Cost to Fix: Valve Cover $50 - $200, Rear Main Seal $300 - $600+
  • Recalls: None Found
• Overheating
  • Description/Symptoms: Engine temperature gauge reads high, coolant boiling over, loss of power.
  • Solution: Inspect and replace any faulty components in the cooling system, such as the radiator, thermostat, water pump, or fan clutch. Flush the cooling system and refill with fresh coolant.
  • Estimated Cost to Fix: Varies greatly depending on the component that needs replacing. $100 - $800+
  • Recalls: None Found

Transmission

5-Speed Manual (NV3550)

• Synchro Wear
  • Description/Symptoms: Grinding when shifting, especially into 2nd or 3rd gear. Difficulty shifting.
  • Solution: Rebuild or replace the transmission.
  • Estimated Cost to Fix: Rebuild $800 - $1500+, Replace $1500 - $3000+
  • Recalls: None Found

3-Speed Automatic (32RH)

• No Issues Found

Suspension

• “Death Wobble”
  • Description/Symptoms: Violent shaking of the front end at certain speeds (typically 40-55 mph), often triggered by bumps in the road.
  • Solution: Diagnose and replace worn or damaged steering and suspension components, including track bar, tie rod ends, ball joints, steering stabilizer, and control arm bushings. Ensure proper alignment.
  • Estimated Cost to Fix: $200 - $1000+ depending on the components needing replacement
  • Recalls: None Found
• Worn Control Arm Bushings
  • Description/Symptoms: Clunking noises from the suspension, loose steering, poor handling.
  • Solution: Replace the worn control arm bushings.
  • Estimated Cost to Fix: $100 - $400+
  • Recalls: None Found

Electrical

• Clock Spring Failure
  • Description/Symptoms: Airbag warning light illuminated, horn inoperative, cruise control malfunction.
  • Solution: Replace the clock spring.
  • Estimated Cost to Fix: $150 - $300+
  • Recalls: None Found

Exterior

• Rust (Frame, Body Mounts)
  • Description/Symptoms: Visible rust on the frame, especially near the rear control arm mounts and body mounts. Rust holes may be present.
  • Solution: Repair or replace rusted sections of the frame. Address rust on body mounts. This can be a very involved and expensive repair.
  • Estimated Cost to Fix: $500 - $5000+ depending on the extent of the damage.
  • Recalls: None Found

Interior

• No Issues Found

Summary:

The 2002 Jeep Wrangler is a generally reliable vehicle, but owners should be aware of some common issues. Engine problems like cracked exhaust manifolds and oil leaks are fairly common and can range from relatively inexpensive to moderately expensive to repair. Suspension issues, particularly the “death wobble,” can be serious and costly to fix. Frame rust is a significant concern, especially in areas where road salt is used, and can lead to very expensive repairs. While some issues are more of an annoyance, others, like frame rust and death wobble, can impact the safety and drivability of the vehicle. Addressing these problems promptly is crucial to maintaining the Wrangler’s reliability and longevity.