Where is ecu in 1987 Ford F-150?

The location of the Engine Control Unit (ECU) in a 1987 Ford F-150 varies slightly depending on the engine and options. However, it's generally found under the hood, near the firewall, often on the passenger side. It's usually a fairly sizable black box, and sometimes mounted to a bracket.

You'll have better luck finding it by:

* Looking for a large, black rectangular box with numerous wiring harnesses connected to it. This is the most reliable visual clue.

* Consulting a 1987 Ford F-150 repair manual specific to your truck's engine. The manual will have a diagram showing the exact location.

* Searching online forums dedicated to classic Ford trucks. Someone may have already posted a picture of the location for your specific year and model.

Remember to be careful when looking under the hood; disconnect the negative battery terminal before doing any work near electrical components.