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.
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HOMESERVICE MANUALSFORD1985BRONCO 5.8 G, STANDARD, TODREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 35 (2.3L EFI EEC IV TESTING)
1985 Ford Bronco 5.8 G, Standard, TOD
Section 35 (2.3L EFI EEC IV Testing)
1985 Ford Bronco 5.8 G, Standard, TODSECTION Section 35 (2.3L EFI EEC IV Testing)
WARNING: This page is about a different car, the 1986 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.
- Self-Diagnostics
- Quick Tests
- Circuit Tests
- Notes
- Test A - No Start
- Test B - Vehicle Battery
- Test C - Reference Voltage
- Test D - Act Sensor
- Circuit Test E - EGR Valve Position (EVP) Sens, EGR Control (EGRC) Solenoid & EGR Vent (EGRV) Solenoid
- Test F - Coolant Temperature Sensor
- Circuit Test G - Manifold Absolute Pressure/Barometric Pressure (Map/BP) Sensor
- Test H - Knock Sensor
- Circuit Test I - Throttle Position Sensor (TPS)
- Circuit Test K - EGR Valve Position (EVP) & EGR Valve Regulator (EVR)
- Circuit Test L - EGR Valve Position (EVP) & EGR Valve Regulator (EVR)
- Circuit Test M - Neutral A/C Switch Input
- Circuit Test N - Key Power Check
- Circuit Test O - Brake On/Off (Boo) Switch
- Circuit Test P - Power Steering Pressure Switch (PSPS)
- Circuit Test R - Fuel Control
- Circuit Test T - Inertia Switch
- Circuit Test U - EGR On/Off Check
- Circuit Test X - Idle Speed Control (By-Pass Air)
- Circuit Test BB - Shift Indicator Light (SIL)
- Circuit Test Cc - Wide Open Throttle A/C Cut-Out (WAC) A/C Demand
- Circuit Test Dd - Converter Clutch Override (CCO)
- Circuit Test Ee - Dynamic Response Test
- Circuit Test Ff - Ignition Diagnostic Monitor (IDM)
- Circuit Test GG - Ignition Diagnostic Monitor (IDM)
- Circuit Test HH - No Codes/Codes Not Listed
- Circuit Test II - System Check
- Circuit Test JJ - Erratic Ignition
- Circuit Test KK - Inlet Air Solenoid (IAS)
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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.