Fuel Control Actuator - FCA
Fuel Control Actuator Sensor
The Fuel Control Actuator FCA is an electronically controlled solenoid valve. The Engine Control Module / ECM controls the amount of fuel that enters the high-pressure pumping chambers by opening and closing the FCA based on a demanded fuel pressure.
What are the symptoms of a failing Fuel Control Actuator?
- Hard Strats
- No Start Condition
If you're experiencing hard start or no start issues, one easy way to confirm whether or not the FCA is causing the problem is to unplug it, thus eliminating any metering simply. Presuming the truck starts, immediately turn it off as you will have full pressure running to the fuel rail, but at least you have reasonably high certainty that the FCA was causing the issue.