1999 Nissan Pathfinder Problems: 7 Known Issues

On the 1996-1999 Nissan Pathfinder 3.3L VG33E V6, nissan recall 11V-244 and campaign bulletin NTB11-064d cover certain 1996-2004 Pathfinder R50 vehicles registered in specified salt states. Salt-related corrosion can develop at the left front strut housing panel and may allow contact with the steering column and damage to steering or brake components. The recall covers 1996-2004 vehicles; this page lists the 1996-1999 model years within it, and the VIN and state of registration decide eligibility.

On the 1990-1999 Nissan Pathfinder, both the 3.0L VG30E (1990-1995) and 3.3L VG33E (1996-1999) are timing-belt engines. The belt, tensioner, and idler are service items that harden and wear with age; a failed tensioner bearing produces a ticking or scraping noise from the front of the engine, and a snapped belt leaves the engine cranking but not starting. These VG-series engines are widely documented as interference designs, so a broken belt commonly bends valves and can total the engine. A mid-1993 production change moved the VG30E from square-tooth to round-tooth belt/sprockets, so the correct part must be verified by inspection on 1993-1994 trucks.

On the 1990-1999 Nissan Pathfinder, the V6 Pathfinders of this era use a camshaft-driven Hitachi distributor that houses the optical crank/cam position sensor and rotor inside a single unit. It is one of the most frequently reported failure points on the WD21 (1990-1995 VG30E) and early R50 (1996-1999 VG33E) trucks. Internal wear, a degrading optical disc, a failing internal coil, or the rotor-retaining screw working loose leads to intermittent or complete loss of spark and timing signal. Failures are often heat-related, showing up once the engine is warm and worsening under load.

On the 1996-1999 Nissan Pathfinder 3.3L VG33E V6, the R50 Pathfinder's front lower ball joints are a common high-mileage wear item. As they wear, play develops that produces a clunk or rattle over bumps, steering wander/vibration, and uneven (inner/outer edge) front tire wear. A complete failure can allow the control arm to separate from the knuckle, so a badly worn joint should not be driven. Diagnosis is a standard rock-the-wheel top/bottom check on a hoist.

On the 1996-1999 Nissan Pathfinder 3.3L VG33E V6, on the VG33E (1996+), the fuel-rail pressure damper and the fuel pressure regulator use internal diaphragms that fail with age. A ruptured diaphragm lets raw fuel weep from the damper or get drawn through the regulator vacuum line into the intake, producing a strong fuel smell, hard/long cranking hot restarts, and misfire or rich running. A simple test: run the engine a few minutes, shut off, and pull the vacuum line off the regulator/damper; fuel in the line confirms a failed diaphragm.

On the 1990-1999 Nissan Pathfinder, the VG30E and VG33E exhaust manifolds warp slightly over years of heat cycling, which snaps the manifold-to-head studs (the rear stud on the passenger/right bank is the most common casualty). This creates an exhaust leak with a characteristic ticking/tapping that is loudest on a cold start and quiets as the engine warms and the manifold expands to close the gap. Nissan acknowledged the problem in a Technical Service Bulletin and released higher-strength replacement studs.

On the 1998-2004 Nissan Pathfinder, on R50-generation Pathfinders the EVAP vacuum cut valve and its bypass solenoid are not under the hood — they sit outside on a steel bracket beneath the floor pan, just behind the driver's-side rear spring and forward of the fuel tank. Forum diagnosis of trouble code P1490 repeatedly puts the fault in that exposed pair: owners describe a green bypass solenoid and a white cut valve on a bracket that has spent its life in the road-salt spray thrown off the rear tire. Two things go wrong there. The solenoid's coil and its two-pin connector corrode until the ECM can no longer see a proper circuit, which is exactly what P1490 reports — the ECM is not getting the expected electrical feedback from the bypass valve driver circuit, as distinct from P1491, which is set when the valve is electrically alive but does not actually change the pressure in the tank during the leak test. The other failure is mechanical: grit and rust scale work into the valve body so the plunger sticks, or the short rubber hoses between the cut valve and bypass valve go hard and crack. Because this whole assembly only operates during the ECM's on-board EVAP diagnostic — the bypass valve is normally closed and opens only so intake manifold vacuum can be applied to the tank to check it for leaks — the driver usually notices nothing at all except the check engine light. There is no misfire, no drivability change, no fuel economy penalty. The code's real cost is a failed emissions inspection and a permanently lit MIL, and it tends to come back a few weeks after a code clear because the diagnostic only runs under a narrow set of fuel-level and drive-cycle conditions.