2002 NISSAN FAIRLADY Z

Typical onset: 80,000-140,000 mi

Symptoms: Cold-start rattle for 2-3 seconds that goes away once oil pressure builds, Metallic whirring or grinding from front of engine, Check engine light with cam/crank correlation codes (P0340, P0345), Catastrophic failure: jumped timing, bent valves, no-start

Fix: Replace timing chains (primary and secondary), guides, tensioners, and often the oil pump drive chain while you're in there. Front cover comes off, 12-16 hours labor. Do NOT just replace the tensioner alone—guides are brittle plastic that fracture. VQ35DE is interference, so a jumped chain destroys valves.

Estimated cost: $2,200-3,800

Typical onset: 60,000-100,000 mi

Symptoms: Transmission fluid leaking from front of car, often at radiator connection, Pink or red fluid pooling under engine bay, Transmission slipping or delayed engagement if fluid level drops, Milky transmission fluid if cooler ruptures internally and coolant mixes in

Fix: Factory cooler lines are steel with crimped rubber ends that rot. Replace with complete aftermarket stainless lines (4-5 hours), flush cooler, refill ATF. If coolant contaminated the trans, flush torque converter or prepare for rebuild. Some techs bypass the in-radiator cooler entirely and run external-only.

Estimated cost: $600-1,200

Typical onset: 70,000-120,000 mi

Symptoms: Persistent ticking or tapping from valve covers, hot or cold, Noise increases with RPM, doesn't go away after warm-up, Sometimes accompanied by slight misfire or rough idle

Fix: VQ35DE uses bucket-over-shim lifters—no adjustment, just replace failed lifters. Valve cover off, cams out, measure clearances, shim as needed. Usually 1-3 lifters are collapsed. Budget 6-8 hours per bank if you're doing it right. Oil starvation from low level or extended changes accelerates this.

Estimated cost: $800-1,600

Typical onset: 50,000-90,000 mi

Symptoms: Clunk or thud on 1-2 upshift or downshift under power, Excessive driveline movement visible from underneath during throttle blip, Vibration at idle in gear

Fix: Rubber transmission mount tears or sags, letting the tail shaft move excessively. Replace mount, 1.5-2 hours. Polyurethane aftermarket options last longer but transmit more NVH. Inspect motor mounts at the same time—they fail similarly.

Estimated cost: $250-450

Symptoms: Stumble, hesitation, or momentary cut-out during hard cornering or acceleration with less than 1/4 tank, Check engine light with lean codes (P0171, P0174) under spirited driving, Fuel pump whine increases when tank is low

Fix: Factory fuel pump basket and baffling can't handle sustained lateral G. Not a failure per se, but a design limitation. Some owners add aftermarket baffles or uprated pumps. Diagnosis is straightforward—fuel pressure drop during cornering. Keep tank above 1/4 or budget a fuel system upgrade if tracking the car. Filter replacement is a non-serviceable in-tank unit unless doing full pump.

Estimated cost: $400-900

Typical onset: 60,000-110,000 mi

Symptoms: Window drops into door or won't roll up, Grinding or popping noise from door when operating window, Window tilts or binds in channel

Fix: Plastic regulator clips and sliders crack. Door panel off, replace regulator assembly, 2-3 hours per side. Driver's side fails more often. OEM Nissan parts hold up better than most aftermarket.

Estimated cost: $350-600