2002 TOYOTA TUNDRA

Typical onset: 120,000-180,000 mi

Symptoms: Excessive oil consumption (1+ quart per 1,000 miles), Blue smoke on startup or acceleration, Loss of compression in one or more cylinders, Catastrophic knocking if oil starvation occurs

Fix: Early-production 4.7L engines had inadequate piston-to-wall clearances and soft piston rings. Once oil consumption starts, it accelerates bearing wear. Requires complete engine rebuild (40-50 hours) or replacement short block (25-30 hours). Many owners limp along adding oil until a rod bearing lets go.

Estimated cost: $4,500-7,500

Symptoms: Visible surface rust on rear frame crossmembers, Flaking, scale rust on C-channel sections, Perforation holes visible underneath, Failed state safety inspection in rust-belt states

Fix: Salt-belt trucks from this era suffer aggressive frame rot, especially rear crossmembers and spare-tire carrier mounting points. Toyota issued a frame replacement recall for 2000-2003 models but many were deemed 'not severe enough' and denied. No practical fix once perforated—replacement frames are 60+ hours and $3,000+ in parts alone. Most trucks get scrapped or sold south.

Estimated cost: $8,000-12,000

Typical onset: 80,000-130,000 mi

Symptoms: Clunking over bumps from front suspension, Loose or wandering steering feel, Visible play when prying on tire at 6-12 o'clock, Grease boot torn or missing

Fix: Lower ball joints were under-spec'd and wear prematurely, especially on 4WD models. Led to a recall, but non-recalled trucks still fail. Joints are pressed into the control arm; replacement requires arm removal (2.5-3 hours per side). Many techs replace the entire lower control arm with aftermarket units for easier install.

Estimated cost: $600-1,200

Typical onset: 100,000-150,000 mi

Symptoms: Transmission fluid dripping from radiator area, Low transmission fluid level on dipstick, Burnt transmission smell if driven low on fluid, Pink fluid puddle under truck

Fix: Steel cooler lines running to the radiator corrode at fittings and flex points. If ignored, transmission runs low and burns clutches. Line replacement is straightforward (1.5-2 hours) but requires full fluid flush afterward. Some owners add an auxiliary cooler at this point.

Estimated cost: $300-600

Typical onset: 120,000-180,000 mi

Symptoms: Ticking or hissing noise from engine on cold start, Exhaust smell in cabin with heater on, Visible soot staining on manifold, Check engine light with bank-specific O2 sensor codes

Fix: Cast-iron manifolds crack between ports due to thermal cycling. Not a safety issue but annoying and can skew O2 sensor readings. Replacement requires removing heat shields and crossover pipe (4-5 hours per side, often both crack eventually). Aftermarket headers are a popular upgrade at this point.

Estimated cost: $800-1,400

Typical onset: 90,000-140,000 mi

Symptoms: Clunking from rear suspension over bumps, Rear axle feels like it's shifting side-to-side, Visible play in shackle pins, Uneven tire wear on rear

Fix: Rear shackle bushings wear out and allow excess movement. Common on trucks used for towing or heavy loads. Shackles and bushings are replaceable (1.5-2 hours), but many owners upgrade to greaseable aftermarket units. Not dangerous but accelerates tire wear.

Estimated cost: $300-550