2003 Ford F350 Loses Power

2003 FORD F-350
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THEIRMOM67
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  • 1 POST
Engine Performance problem
2003 Ford F350 V8 Two Wheel Drive 152000 miles

Out truck loses power after it is warm and reaches 3rd geat. Cold it runs great, and up to 3rd gear. It shows no codes either. Any ideas?
Aug 27, 2009 at 4:20 PM
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RASMATAZ
  • CAR REPAIR CONTRIBUTOR
  • 75,992 POSTS
Oxygen sensor
Catalytic converter
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

Could also be a transmission problem.
Aug 27, 2009 at 8:08 PM
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