Where is the ecu for a 94 e150 ford van?

The ECU (Engine Control Unit) location in a 1994 Ford E150 van varies slightly depending on the engine and options. However, it's most commonly found under the hood, near the passenger side (right side) firewall. It's often attached to the inner fender well or secured to a bracket in that general area.

It's a relatively small, black box with numerous connectors. Look for a large, rectangular box with wiring harnesses connected to it. It might have a sticker identifying it as the PCM (Powertrain Control Module) – PCM and ECU are often used interchangeably.

Because of the variations, searching for "1994 Ford E150 PCM location" with images on Google Images could be helpful in visually identifying it. Using your specific engine size (e.g., 4.9L, 5.0L, 5.8L, 7.5L) in your search will further refine your results.