1990 TOYOTA MR2

Typical onset: 80,000-140,000 mi

Symptoms: White smoke from exhaust on cold start, Coolant loss with no visible external leaks, Overheating under boost or highway driving, Milky oil or bubbles in coolant reservoir

Fix: Full head gasket replacement requires engine-out service due to mid-engine layout; includes resurfacing both head and block, ARP studs recommended, timing belt service while apart. 18-24 hours labor for competent shop. Many owners upgrade turbos and do full refresh at this point.

Estimated cost: $3,500-6,500

Typical onset: 60,000-100,000 mi

Symptoms: Harsh clunking on throttle lift or engagement, Excessive shifter vibration at idle, Visible sag or tearing in rear mount rubber, Difficulty getting into gear when engine under load

Fix: Rear mount sits between engine and firewall in cramped mid-engine bay; requires lifting engine slightly for access. OEM mounts are NLA, aftermarket poly bushings are common upgrade. 3-4 hours labor.

Estimated cost: $400-700

Typical onset: 70,000-120,000 mi

Symptoms: Car feels twitchy or unpredictable mid-corner, Rear end feels loose over bumps in turns, Clunking from rear suspension on direction changes, Visible play or cracking in trailing arm bushings

Fix: Mid-engine weight bias makes worn rear bushings dangerous; trailing arm bushings are common culprit. Full rear bushing refresh with upgraded poly units recommended. Alignment critical afterward. 6-8 hours labor for full rear end.

Estimated cost: $800-1,400

Typical onset: 80,000+ mi

Symptoms: Oil pooling on top of exhaust manifold (cam covers), Oil drips on garage floor near rear of engine, Burning oil smell after spirited driving, Blue smoke on deceleration (valve stem seals)

Fix: Cam cover gaskets are straightforward but tedious in mid-engine bay, 4-5 hours. Rear main seal requires transmission removal, often done during clutch job. Valve stem seals require head removal, 12-16 hours, usually bundled with head gasket if turbo.

Estimated cost: $600-1,200 (cam covers), $1,800-2,800 (rear main with clutch)

Symptoms: Water dripping on seats or carpet after rain, Wind noise at highway speeds, Hardened or cracked rubber seals around T-tops, Sunroof drain tubes clogged with debris

Fix: T-top models have notorious seal issues; OEM weatherstripping NLA, aftermarket kits vary in quality. Sunroof drains route through rear quarters and clog easily. Clean drains first (1 hour), full seal replacement 3-4 hours if careful.

Estimated cost: $300-600

Typical onset: 100,000+ mi

Symptoms: Hard starting when hot or after sitting, Stumbling or cutting out under hard acceleration, Whining noise from fuel tank area, Check engine light for lean condition (turbo models)

Fix: Fuel pump access requires dropping tank or going through trunk area; filter is inline and easier. Turbo models demand higher flow, aftermarket Walbro 255 common upgrade. Pump replacement 4-5 hours, filter alone 1 hour.

Estimated cost: $400-800 (pump), $120-200 (filter only)

Typical onset: 80,000-150,000 mi

Symptoms: Rapid ticking from valve cover area on cold start, Noise diminishes after warm-up but may persist, Loss of power if severe (collapsed lifter), Metallic tapping that follows engine RPM

Fix: Hydraulic lifters on 3S-GE wear over time; shim-under-bucket design on GE requires valve clearance check and shim replacement if out of spec. Full lifter replacement 8-10 hours with valve adjustment. Often ignored if not affecting performance.

Estimated cost: $800-1,400