Ok, well I usually rececommend changing your Air Filter at least every other oil change. Even though you shake it out you will not get all the dust particles that clog the filter.
The Ignition System is talking about the Tune-Up.
The Fuel would be the pressure the TPS(Throttle Position Sensor, IAC(Idle Air Control).
Could also be something with the Emmission System.
And yes it could be an O2 sensor.
On newer vehicles just about any problem will set a computer code and turn the Engine Light on.
Is you engine light on?
How is your vehicle running?
Thursday, February 5th, 2009 AT 5:51 PM