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 MANUALSFORD2010EDGE LIMITED, FWDREPAIR AND DIAGNOSISENGINE MECHANICALCOOLING SYSTEM (MECHANICAL)ENGINE COOLING SYSTEMDIAGNOSIS AND TESTINGENGINE COOLINGSYMPTOM CHART

2010 Ford Edge Limited, FWD

Symptom Chart

2010 Ford Edge Limited, FWDSECTION Symptom Chart

SYMPTOM CHART

Condition	Possible Sources	Action
Loss of coolant	Coolant hoses or tubes Hose clamps Coolant pump O-ring seal or gasket Thermostat O-ring seal or gasket Thermostat housing Radiator Degas bottle Pressure relief cap Coolant pump leaking from weep hole (LH side of block) Heater core Engine gaskets (may leak internally or externally) Cylinder block core plugs Cylinder head core plugs Block heater (if equipped)	GO to PINPOINT TEST A .
The engine overheats	Low coolant level External engine coolant leak Airlock in system Pressure relief cap installation Restricted airflow through the A/C condenser/radiator Internal engine coolant leak Coolant condition/concentration Accessory drive components Non-OEM engine enhancement components Electric cooling fan Radiator Thermostat Cylinder Head Temperature (CHT) sensor Heater core Coolant pump Coolant flow restriction	GO to PINPOINT TEST B .
The engine does not reach normal operating temperature	Low coolant level Thermostat Electric cooling fan always on Engine Coolant Temperature (ECT) indicator system (gauge) CHT sensor	GO to PINPOINT TEST C .
The block heater does not operate correctly	Block heater power cable	CHECK continuity in all 3 power cable circuits. If any circuit measures greater than 5 ohms, INSTALL a new power cable.
The block heater does not operate correctly	Block heater	CHECK the resistance of the block heater. If the resistance does not measure between 12.5 and 17.0 ohms, INSTALL a new block heater.
The electric cooling fan is inoperative in one or more speeds or does not operate correctly	Wiring Relays Fuses Fan Control (FC) module Cooling fan motor Cooling fan resistor	REFER to the INTRODUCTION - GASOLINE MODELS .
The electric cooling fan stays on all the time	Wiring Relays	REFER to the INTRODUCTION - GASOLINE MODELS .
Noisy electric cooling fan operation	Foreign material contamination Fan motor	REMOVE the foreign material from the cooling fan and shroud. TEST the system for normal operation. If still noisy, INSTALL a new cooling fan assembly.
Noisy electric cooling fan operation	Fan blade detached from fan motor	INSTALL a new cooling fan assembly.

RENDER: 1.0x

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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.