• Tiny
  • den91010
  • 2001 Toyota Rav4

Shakes or Wobbles problem
2001 Toyota Rav4 Automatic 148000 miles

my car is making a jerking motion and is very sluggish. What is wrong with it?

Saturday, December 26th, 2009 AT 6:51 PM

1 Answer

  • Tiny
  • rasmataz
  • Member

Possible causes: 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

Was this
Saturday, December 26th, 2009 AT 10:20 PM

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