1991 MAZDA PROTEGE

Typical onset: 90,000-150,000 mi

Symptoms: Pink or milky transmission fluid indicating coolant contamination, Transmission slipping or delayed engagement after cooler develops internal leak, Overheating transmission, burnt ATF smell

Fix: The cooler integrated into the radiator fails internally, mixing coolant and ATF. Requires radiator replacement, full transmission flush (sometimes external cooler addition), and if caught late, transmission rebuild. 4-6 hours labor for cooler/flush, add 12-18 hours if trans needs rebuild.

Estimated cost: $600-3,200

Typical onset: 80,000-120,000 mi

Symptoms: Clunking when shifting from Park to Drive or Reverse, Excessive engine movement visible from engine bay during acceleration, Vibration at idle that wasn't there before

Fix: The rear transmission mount rubber deteriorates and the mount collapses, allowing powertrain to shift excessively. Straightforward replacement, 1.5-2 hours labor with basic hand tools.

Estimated cost: $150-280

Typical onset: 150,000+ mi

Symptoms: Knocking or tapping noise from lower engine that increases with RPM, Low oil pressure at idle when engine is hot, Metallic debris on magnetic drain plug

Fix: The BP engine is solid but abuse or extended oil change intervals lead to bearing wear. Requires full teardown: rod and main bearing replacement, crank polishing or replacement if scored, often combined with rings and rod bolts. 14-18 hours labor, sometimes more economical to swap in used low-mileage engine (8-10 hours).

Estimated cost: $2,200-4,500

Typical onset: 120,000-180,000 mi

Symptoms: White smoke from exhaust, sweet smell, Coolant loss with no external leaks, Overheating or fluctuating temperature gauge, Oil cap shows milky residue

Fix: Usually results from overheating event or age-related gasket deterioration. Requires head removal, resurfacing (often warped), new gasket set, timing belt while apart. 8-11 hours labor. Always pressure-test cooling system and replace thermostat during this job.

Estimated cost: $1,200-2,100

Symptoms: No crank, no start with no clicking (not starter-related), Intermittent loss of all electrical power while driving, Key won't turn or gets stuck in ignition, Dash lights flicker or die completely

Fix: The ignition switch contacts wear or fail, sometimes related to recalled batch but occurs outside recall scope too. Requires steering column disassembly and switch replacement. 2-3 hours labor.

Estimated cost: $220-420

Typical onset: 80,000+ mi

Symptoms: Hesitation or stumbling under acceleration, Difficulty starting when hot, Stalling at idle after highway driving, Loss of power at higher speeds

Fix: In-line fuel filter clogs from rust and sediment in aging steel tank. Often neglected since filter is underneath rear of car. Replace every 30,000-40,000 miles preventively. 0.5-1 hour labor.

Estimated cost: $80-150