1996 ACURA NSX

Symptoms: Sudden loss of all gears while driving, Transmission stuck in gear, Grinding or popping noise before failure, VIN range J000001-J002300 at highest risk

Fix: Transmission removal, case repair or replacement with updated snap ring groove, reassembly. 12-16 hours labor. Many owners proactively fix this even before failure if VIN is in range.

Estimated cost: $3,500-5,500

Typical onset: 80,000-150,000 mi

Symptoms: ATF pooling under engine bay, Low transmission fluid warnings, Burnt smell from fluid hitting exhaust, Visible seepage at cooler line connections

Fix: Replace rubber cooler lines and o-rings. Lines run along passenger side frame rail and age out from heat cycles. 2-3 hours labor with proper lift access.

Estimated cost: $400-700

Typical onset: 60,000-120,000 mi

Symptoms: Excessive drivetrain clunk on throttle lift/application, Visible torn rubber on inspection, Vibration through chassis at idle, Shifter movement more pronounced

Fix: Replace front, rear, and transmission mounts as a set. Rear mount requires exhaust removal. Combined 4-6 hours labor. OEM mounts superior to aftermarket for street use.

Estimated cost: $1,200-1,800

Typical onset: 100,000-180,000 mi

Symptoms: White smoke from exhaust on cold start, Coolant consumption without visible leaks, Milky oil on dipstick or cap, Overheating episodes, Misfires or rough idle

Fix: Both heads off, resurface, ARP studs recommended, timing belt replacement mandatory while apart, valve adjustment. 20-28 hours labor. Often accompanies deferred cooling system maintenance or track abuse without proper coolant flushes.

Estimated cost: $5,500-8,500

Symptoms: Catastrophic valve-to-piston contact if belt snaps, Coolant leaks from weeping water pump, Squealing from worn tensioner bearing, Engine won't start after belt failure

Fix: This is interference engine—belt failure bends valves and often requires complete head rebuild with pistons inspection. If caught before failure, timing belt/water pump service is 6-8 hours. Post-failure rebuild: 25-35 hours including head work, valve replacement, potential piston/ring work.

Estimated cost: $1,200-2,000 preventive; $8,000-15,000 post-failure

Typical onset: 120,000+ mi or <50,000 mi with track abuse

Symptoms: Metallic knocking from lower engine, worst at idle, Low oil pressure warning, Metal shavings in oil filter, Sudden engine seizure in worst cases

Fix: Engine out, full teardown, crank inspection/machining, new bearings, often pistons and rings while apart. 30-40 hours labor. Typically results from extended oil change intervals, wrong oil weight, or sustained high-RPM operation with inadequate oil system upgrades.

Estimated cost: $9,000-16,000

Typical onset: 80,000-140,000 mi

Symptoms: Hesitation or stumble under hard acceleration, Difficult hot starts, Fuel pressure drops under load, Check engine light with lean codes

Fix: In-tank pump and filter replacement requires fuel tank drop. 4-5 hours labor. NSX has no easily serviceable inline filter—main filter is inside tank with pump. Use OEM or Walbro high-pressure pump.

Estimated cost: $800-1,400