2001 Ford Focus V4 Two Wheel Drive Automatic 74,000 miles
When I warm up the car, the engine is extremely loud upon starting and continues until driven for a period of time. There is a small vibration inside the car. (The noise is less if I'm sitting at a stop light and put it in neutral)
The vehicle was purchased new in 2001 and the maintenance has been kept up very well - oil change, transmission, etc. We've always used the same type of gas in the vehicle.
Can you give us an idea of what may be the problem?