2002 NISSAN GLORIA

Typical onset: 80,000-140,000 mi

Symptoms: Loud ticking or tapping at idle, especially when cold, Noise increases with RPM, Loss of power if lifter collapse occurs, Check engine light with cam/crank correlation codes in severe cases

Fix: RB25DET hydraulic lifters wear from inconsistent oil changes or running low-quality oil. Full lifter replacement requires removing cam covers, cams, and shims. Expect 8-10 hours labor for all lifters. Some techs attempt just the noisy ones (4-5 hours) but you'll likely be back in a year. Always replace cam seals and valve cover gaskets while you're in there.

Estimated cost: $1,200-2,200

Typical onset: 90,000-130,000 mi

Symptoms: Rough idle or stalling when warm, Check engine light with P0011, P0021 (cam timing codes), Poor throttle response or hesitation, Rattling on cold start from timing chain area

Fix: The VQ30DD uses Nissan's early NEO VVL system which gets gummed up from extended oil change intervals. VVT solenoids fail or stick, causing timing issues. Solenoid replacement is 1.5-2 hours each bank. Cam position sensors also fail frequently (1 hour labor each). If timing chain tensioners are rattling, that's another 6-8 hours and becomes a $2,000+ job. Use quality synthetic oil and change every 5,000 miles to prevent cascade failures.

Estimated cost: $400-800

Typical onset: 70,000-120,000 mi

Symptoms: Transmission fluid puddles under car, typically near radiator, Low transmission fluid warnings or erratic shifting, Burnt transmission fluid smell, Transmission overheating in severe cases

Fix: The RE4R01A automatic transmission uses steel hardlines to the radiator-mounted cooler, and these corrode at fittings or crack from vibration. Replacement requires new lines, fittings, and often the external cooler itself. 3-4 hours labor plus full fluid flush. If you've been driving with low fluid, internal damage may already be done. This is a tow-home failure if the line ruptures completely.

Estimated cost: $600-1,100

Typical onset: 100,000-150,000 mi

Symptoms: Clunking when shifting from Park to Drive or Reverse, Excessive driveline vibration at idle, Transmission visibly sagging when inspected from below, Harsh shifts under acceleration

Fix: The rubber transmission mounts deteriorate from age and oil contamination. Front mount is 2 hours, rear crossmember mount is another 2-3 hours because you're working around the exhaust and driveshaft. Replace both at once since they fail together. OEM mounts are expensive but aftermarket units often fail within a year on these heavier luxury sedans.

Estimated cost: $500-900

Typical onset: 120,000-180,000 mi

Symptoms: White smoke from exhaust, Coolant loss with no visible leaks, Oil milkshake (chocolate milk appearance) on dipstick, Overheating or persistent bubbles in coolant reservoir, Misfires on cylinders 5 or 6

Fix: RB25DET head gaskets fail from age, overheating events, or boosted abuse. The stock head gasket is marginal even at factory boost levels. Repair requires head removal, resurfacing (always needed, deck warps), new head bolts, and full gasket set. 14-18 hours labor. While the head is off, replace the water pump, cam seals, and inspect cam lobes. If you're keeping the car, upgrade to a metal head gasket. This job often spirals into a full refresh when you find worn cam lobes or valve guides.

Estimated cost: $2,800-4,500

Typical onset: 90,000-140,000 mi

Symptoms: Violent shaking or vibration at specific RPM ranges, Belt squeal or belts walking off pulleys, Timing marks no longer aligned, Visible wobble of crankshaft pulley, Check engine light with crank position sensor codes

Fix: The rubber ring between the hub and outer pulley deteriorates, causing the outer ring to spin or separate. This throws off accessory belt alignment and can damage the crank nose if the pulley comes completely apart at high RPM. Replacement is straightforward (2-3 hours) but requires a harmonic balancer puller and proper installation tool to avoid crankshaft damage. OEM or quality aftermarket only—cheap ones fail quickly on a turbo engine.

Estimated cost: $450-750