2005 TOYOTA CELICA

Typical onset: 80,000-150,000 mi

Symptoms: Blue smoke on startup or acceleration, Burning through 1+ quart between oil changes, Fouled spark plugs, Loss of power in VVTL-i lift band (above 6,000 RPM)

Fix: Piston rings glaze or carbon-pack from short trips and aggressive driving. Full engine rebuild with new rings, hone cylinders, sometimes pistons if scoring present. 18-24 labor hours for in-car rebuild; 25-30 if pulling engine. Many opt for short block replacement if severe.

Estimated cost: $3,500-6,500

Typical onset: 60,000-100,000 mi

Symptoms: Clunking when shifting or launching, Excessive engine movement visible from engine bay, Vibration at idle, Shifter feels loose or vague

Fix: The passenger-side front mount takes heavy abuse on the 2ZZ, especially with hard shifts to 8,200 RPM. Replace mount, inspect other engine/trans mounts while there. 1.5-2 labor hours.

Estimated cost: $250-450

Typical onset: 90,000-140,000 mi

Symptoms: Transmission fluid dripping near radiator area, Low fluid level on dipstick, Burnt smell after highway driving, Slipping or delayed shifts if fluid gets low

Fix: Rubber hoses from transmission to cooler crack or connections corrode. Replace both lines and top off fluid. On some cars, cooler itself rusts through. 1.5-2.5 labor hours.

Estimated cost: $300-600

Symptoms: Sudden loss of power above 6,000 RPM, Check engine light with P1349 code (VVT system malfunction), Metallic rattle from valve cover at high RPM, Catastrophic engine damage if bolt falls into timing chain

Fix: The two bolts securing the cam lift mechanism can back out, especially on earlier 2ZZ engines or those with valve cover removed and bolts not torqued properly. Preventive fix: remove valve cover, apply threadlocker, retorque to spec. If bolt already loose, inspect for damage. 3-4 labor hours for preventive service; 20+ if engine grenades.

Estimated cost: $400-700 preventive, $4,000+ if catastrophic

Typical onset: 100,000-150,000 mi

Symptoms: Hesitation or stumbling under hard acceleration, Lean codes (P0171/P0174), Struggles to hit or hold redline, Fuel pressure drop-off at high RPM

Fix: In-tank sock filter clogs from debris. Requires dropping fuel tank, replacing pump assembly or just the sock if available separately. Many replace whole pump while in there. 2.5-3.5 labor hours.

Estimated cost: $400-800

Typical onset: 70,000-120,000 mi

Symptoms: Rough idle or stalling, Hesitation on throttle tip-in, Check engine light with P0120-P0123 codes, High idle that won't drop

Fix: Carbon buildup on throttle plate or failing TPS. Clean throttle body with carb cleaner, reset ECU. If TPS faulty, replace sensor (built into throttle body on some). 1-1.5 labor hours for cleaning; add $300-500 parts if throttle body replacement needed.

Estimated cost: $150-600