The 1998 Honda Passport is a rebadged Isuzu Rodeo with Honda badges, sharing Isuzu's 3.2L V6 (6VD1) and 4-speed automatic transmission. Expect Isuzu-grade reliability, meaning significant engine and transmission issues at higher mileage that can total the vehicle economically.
Automatic Transmission Failure (4L30-E)
Common · high severityTypical onset: 90,000-150,000 mi
Symptoms: harsh or delayed shifts between 2nd and 3rd gear, slipping under acceleration, transmission overheating, no movement in drive or reverse
Fix: The 4L30-E transmission is notorious for torque converter clutch failure and internal clutch pack wear. Repair requires rebuild or replacement. Budget 8-12 hours labor for R&R plus rebuild time. Many shops recommend replacement with reman unit due to cost-effectiveness.
Estimated cost: $2,200-3,800
Transmission Oil Cooler Line Failure
Common · high severityTypical onset: 80,000-120,000 mi
Symptoms: transmission fluid leaking near radiator, pink fluid in coolant reservoir, transmission overheating, milky transmission fluid
Fix: The internal transmission cooler inside the radiator can rupture, allowing coolant and ATF to mix—this kills the transmission quickly. Requires radiator replacement and complete transmission fluid flush, sometimes full transmission replacement if contamination went unnoticed. 3-5 hours labor for cooler/radiator, add 8-12 if transmission is damaged.
Estimated cost: $600-1,200 (cooler only), $3,000-4,500 (if transmission damaged)
3.2L V6 Engine Gasket and Seal Failures Leading to Rebuild
Occasional · high severityTypical onset: 120,000-180,000 mi
Symptoms: external oil leaks from valve covers and front crankshaft seal, coolant leaks from head gaskets, white smoke from exhaust, overheating, oil consumption exceeding 1 quart per 1,000 miles
Fix: The 6VD1 engine develops head gasket failures and piston ring wear at higher mileage. Head gasket job alone is 12-16 hours, but once you're in there, worn rings and bearings often mean a full rebuild or short block is more economical. Many owners face the repair-versus-replace decision here.
Estimated cost: $1,800-2,800 (head gaskets only), $4,000-6,500 (rebuild/short block)
Rear Suspension Ball Joint and Trailing Arm Bushing Wear
Common · medium severityTypical onset: 70,000-110,000 mi
Symptoms: clunking from rear over bumps, wandering or unstable handling, uneven rear tire wear, visible play in rear suspension when jacked up
Fix: The rear trailing arm bushings and ball joints wear prematurely, especially if driven on rough roads. Bushings require pressing out old and pressing in new; ball joints may need full arm replacement depending on design. 4-6 hours labor for both sides.
Estimated cost: $600-1,200
Front Underhood Wiring Harness Chafing and Corrosion
Occasional · medium severitySymptoms: intermittent no-start, check engine light with multiple random codes, gauges acting erratically, electrical accessories cutting out
Fix: Wiring near the engine bay can chafe against metal or degrade from heat exposure, leading to shorts and opens. NHTSA recalls addressed some of this, but non-recalled harnesses still fail. Diagnosis is time-consuming (2-4 hours), repair involves splicing or harness replacement sections (3-6 hours depending on extent).
Estimated cost: $400-1,000
ABS Modulator and Wheel Speed Sensor Failures
Occasional · medium severityTypical onset: 100,000+ mi
Symptoms: ABS and brake warning lights on constantly, ABS pulsing activation during normal braking, no ABS function during emergency stops
Fix: The ABS modulator (pump and valve body) can fail internally, and wheel speed sensors corrode or break. Sensor replacement is 1-2 hours per corner; modulator replacement is 3-5 hours and requires bleeding. Used modulators are common solution due to new part cost.
Estimated cost: $150-300 (sensors), $800-1,500 (modulator)
Buy only if under 100,000 miles with documented transmission services and priced $2,000+ below comparable Honda CR-Vs—this is an Isuzu with Honda paint, not Honda engineering.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.