• Tiny
  • steelbendr
  • 2002 Hyundai Sonata
  • 4 CYL
  • FWD
  • 103,500 miles

Tach. Drops whiledriving and car loses power
hyundi sonata 2002

Tuesday, March 15th, 2011 AT 9:17 PM

1 Answer

  • Tiny
  • rasmataz
  • Member

Do you have a check engine light and when was last tune-up?

Could be one of the following causing the lack of acceleration

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Crankshaft position sensor
Knock sensor
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking or defective fuel pump.
Fuel contamination.
Foul/defective spark plugs.
Open spark plug wires.
Ignition coil/Coil packs defective.
Incorrect ignition timing.
Cap and rotor.

Note: If it doesn't apply disregard it and keep testing.

Was this
Tuesday, March 15th, 2011 AT 10:33 PM

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