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1999 BMW 323 Acceleration

Tiny
HELPNEEDED
  • MEMBER
  • 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?
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Wednesday, July 14th, 2010 AT 9:52 AM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
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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