Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1988 Ford Festiva L PlusFACTORY OEM SERVICE PROCEDURE
Feedback Carburetor System
- Description
- Operation
- Notes
- A/C Clutch Switch
- Barometric Pressure (BP) Switch
- Coolant Temperature Sensor
- Coolant Temperature Switch
- EGR Position Sensor
- Electrical Switch Inputs
- Engine Speed Signal
- Exhaust Gas Oxygen (Ego) Sensor
- Feedback Carburetor Actuator (FBCA)
- Fuel Shutoff Solenoid Valve
- Gear Position Switches
- Idle Switch
- Idle-Up Solenoids
- Manifold Absolute Pressure (Map) Sensor
- Vacuum Switch
- Testing
- Self-Diagnostic System Check
- ECA 2 - Code 01 - Ignition Pulse
- ECA 4 - Code 09 - Coolant Temperature Sensor
- ECA 8 - Code 13 - Map Sensor
- ECA 14 - Code 15 - Ego Sensor
- ECA 19 - Code 16 - EGR Valve Position (EVP) Sensor
- ECA 23 - Code 17 - Ego Sensor Feedback System
- ECA 28 - Codes 18, 19, 20 & 21 - Feedback Carburetor Actuator
- ECA 31 - Code 22 - Fuel Shutoff Solenoid
- ECA 35 - Codes 28 & 29 - EGR Solenoid Valve
- ECA 39 - Code 31 - Air Control Valve (ACV)
- ECA 43 - Codes 34 & 35 - Idle-Up System
- ECA 47 - Code 38 - EFE Heater Relay
- ECA 51 - Code 70 - Vacuum Switch
- ECA 55 - No Code - Keep Alive Power
- ECA 57 - No Code - Key On Power
- ECA 59 - No Code - Ground
- ECA 61 - No Code - Idle Switch
- ECA 64 - No Code - 4TH Gear Switch
- ECA 67 - No Code - Clutch & Neutral Switches
- ECA 70 - No Code - Coolant Temperature Switch
- ECA 73 - No Code - Barometric Pressure (BP) Switch
- ECA 76 - No Code - Electrical Switch Inputs
- Wiring Diagrams
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.