1997 TOYOTA PREVIA

Typical onset: 100,000-180,000 mi

Symptoms: Pink or milky fluid in transmission or radiator, Sudden harsh shifting or slipping, Transmission failure within days of coolant contamination, Overheating transmission even in moderate driving

Fix: The internal transmission cooler in the radiator fails, allowing coolant and ATF to mix. Once contaminated, the transmission is toast. Prevention requires replacing the radiator and installing an external cooler before failure. If caught early (pink fluid only), flush costs 3-4 hours. If transmission is damaged, expect rebuild at 12-16 hours labor.

Estimated cost: $400-800 preventive (radiator + external cooler) / $2,800-4,200 transmission rebuild

Typical onset: 120,000-200,000 mi

Symptoms: Blue smoke on acceleration, Oil consumption increasing (1 qt per 500-1000 mi), Rattling or whining from supercharger, Loss of boost pressure and power, Seized supercharger bearing

Fix: The rubber oil feed and return lines to the SC14 supercharger harden and crack, starving the bearings. Once damaged, the supercharger grenades and sends metal through the intake. Preventive replacement of lines is 2-3 hours. Supercharger rebuild or replacement is 6-8 hours, but often engine damage has already occurred requiring head gasket or worse. Many owners remove the supercharger entirely and tune for NA operation.

Estimated cost: $200-350 preventive line replacement / $1,200-2,000 supercharger rebuild / $2,500-5,000+ if engine damaged

Typical onset: 150,000-220,000 mi

Symptoms: Knocking noise from low in engine, worse when cold, Metal shavings in oil, Sudden loss of oil pressure, Catastrophic engine failure

Fix: The 2TZ-FZE with supercharger boost stresses the bottom end, especially if oil changes were extended or wrong oil used. Rod bearings wear, then spin, destroying the crank. Requires short block replacement or full rebuild. Access is terrible due to mid-engine location under the front seats—plan 18-24 hours labor for in-vehicle rebuild, or 12-16 for engine removal and reinstall with external rebuild.

Estimated cost: $3,500-6,000 in-vehicle rebuild / $4,500-7,500 with removal

Typical onset: 140,000-200,000 mi

Symptoms: White smoke from exhaust, Overheating with no external leaks, Bubbles in coolant reservoir when running, Oil level rising (coolant mixing in), Loss of coolant with no visible leak

Fix: The 2TZ-FZE can blow head gaskets between cylinders or into coolant passages. The mid-engine layout makes this job miserable—remove doghouse, disconnect supercharger, deal with limited access. Expect 14-18 hours labor for both heads in-vehicle. Must resurface heads, replace head bolts, and address any timing belt/water pump while apart.

Estimated cost: $2,200-3,800 both head gaskets

Typical onset: 120,000-180,000 mi

Symptoms: Whining or howling from rear that increases with speed, Clunking when shifting from drive to reverse, Vibration at highway speeds, Metal shavings in differential fluid

Fix: AWD models with the rear differential see bearing failures, often from lack of fluid changes (30k intervals often ignored). Requires differential rebuild or replacement at 4-6 hours labor. This was subject to a recall for mounting bolts, but bearing wear is separate. Drain and inspect fluid every 30k to catch early.

Estimated cost: $800-1,400 rebuild

Typical onset: 80,000-150,000 mi

Symptoms: Clunking when shifting into gear, Excessive vibration at idle, Steering wheel shaking, Visible transmission sag when inspected

Fix: The mid-engine layout puts the transmission mounts under stress. They're hydraulic and fail gradually. Replacement requires supporting the powertrain from below—2-3 hours labor for both mounts. Not dangerous but very annoying and accelerates other wear.

Estimated cost: $300-550

Symptoms: Hesitation or stumbling under load, Hard starting after sitting, Stalling when fuel tank below 1/4, Loss of power at highway speeds

Fix: The steel fuel tank rusts internally on neglected examples, sending debris to clog the filter and pump strainer. Filter replacement is simple (30 min), but if tank is rusty, you'll be replacing filters every few months until you drop the tank and clean/coat it or replace the tank (4-5 hours). Pump strainer cleaning requires tank drop.

Estimated cost: $40-80 filter only / $600-1,000 tank replacement