Where is the vacuum pump in a 2004 E350 Ford van?

The vacuum pump location on a 2004 Ford E-350 van depends on the engine. There are several engine options for that year. The pump is typically either integrated into the power steering pump or it's a separate unit.

To find it, you'll need to:

1. Identify your engine: Look for an engine code (e.g., 4.6L V8, 5.4L V8, 6.0L V8, etc.) This is usually stamped on the engine block or found in your owner's manual.

2. Consult a repair manual: Once you know the engine, get a repair manual specific to your van's year and engine. A Chilton's or Haynes manual, or an online service manual, will show you exactly where the vacuum pump is located for your specific engine.

3. Look near the power steering pump: If it's not a separate unit, it will be part of the power steering pump, usually on the front of the engine, near the serpentine belt.

Without knowing your specific engine, I cannot give you a precise location. Attempting to locate it without proper knowledge could lead to accidental damage or injury. Using a repair manual is crucial for safe and effective maintenance.