• Tiny
  • helpneeded
  • 1999 BMW 323

Engine Performance problem
1999 BMW 323 Manual 91,000 miles

I am having acceleration issues. For example when I am on the highway and I go to pass someone my car is not accelerating properly. It is hesitating before it will engage and give the boost of power needed to pass the car. I have recently replaced the oxygen sensor, intake boot and air filter. I am getting ready to replace the camshaft sensor and the fuel filter. Do you have any suggestions on what may be causing this issue?

Do you
have the same problem?
Wednesday, July 14th, 2010 AT 9:52 AM

1 Reply

  • Tiny
  • rasmataz
  • Member

Inspect and test all the following listed below:

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking, fuel filter or defective fuel pump.
False air leakage.
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.

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Thursday, July 15th, 2010 AT 1:50 AM

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