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2003 Ford Ranger motor missing

Tiny
HERE72977
  • MEMBER
  • 2003 FORD RANGER
Engine Performance problem
2003 Ford Ranger 6 cyl Two Wheel Drive Automatic

I have a problem with my motor missing or feeling like it is going to die when ever I acceralate or hit passing gear. Also it seems to be getting wosrt now and doing it during normal driving. I have changed the fuel and air filters.
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Friday, December 25th, 2009 AT 2:54 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check and test the following:

Oxygen sensor
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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Friday, December 25th, 2009 AT 4:16 PM

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