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Cuts out when accelerating

Tiny
VUALL.COM
  • MEMBER
  • 2003 FORD TAURUS
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 136,000 MILES
Engine cuts out when accelerating uphill and transmission downshifts at approx. 3000 - 3500 rpm. Car violently jerks back and forth as engine cuts in and out. Changed fuel filter, same problem persists.
Friday, September 18th, 2009 AT 1:18 AM

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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Friday, September 18th, 2009 AT 2:42 AM

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