Mechanics

NISSAN PATHFINDER SENSOR PROBLEM

1990 Nissan Pathfinder

Noises problem
1990 Nissan Pathfinder 6 cyl Four Wheel Drive Automatic 330, 00 miles

i have no problem starting my vehicle and it does not stall but when I exceed 100 km it makes noise and feels like it's struggling. Does this means I need a tuneup?
Avatar
Gita
September 7, 2009.




A good place to start and go from there also see below probable causes.

Dirty fuel injectors (cleaning the injectors often fixes this).
Bad MAP (manifold absolute pressure) sensor
Bad TPS (throttle position) sensor
Bad or dirty MAF (mass airflow) sensor
Low fuel pressure (leaky fuel pressure regulator or weak fuel pump)
Vacuum leaks (intake manifold, vacuum hoses, throttle body, EGR valve)
Bad gasoline (fuel contaminated with water or too much alcohol)

Sometimes, what feels like a hesitation is actually ignition misfire rather than lean misfire. The causes of ignition misfire may include: Dirty or worn spark plugs
Bad plug wires
Weak ignition coil
Wet plug wires

Tiny
Rasmataz
Sep 7, 2009.


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