1989 Nissan Truck Engine stalling

Tiny
BRAYDON 936
  • MEMBER
  • 1989 NISSAN TRUCK
  • 4 CYL
  • 2WD
  • MANUAL
  • 110,000 MILES
Engine stalls when accelerating and sometimes it backfires. It wiil accelerate to full throttle but immediately stalls out.
Saturday, October 10th, 2009 AT 3:00 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
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
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Saturday, October 10th, 2009 AT 4:01 PM

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