Engine Cooling — Pinpoint Tests — Engine Cooling - 3.7L Duratec (227kW 301PS) · Reference 5902

CHECK continuity in all 3 power cable circuits. If any circuit measures more than 5 ohms, INSTALL a new power cable. The block heater does not Block heater power cable CHECK the resistance of the block operate correctly. Block heater heater. If the resistance does not measure between 30 and 40 ohms, INSTALL a new block heater. REFER to: Block Heater . Wiring The electric cooling fan is Relays Refer to ENGINE CONTROLS - inoperative in one or more Fuses INTRODUCTION (EXCEPT speeds or does not operate Cooling fan motor DIESEL & HYBRID) . correctly. Cooling fan resistor Refer to ENGINE CONTROLS - The electric cooling fan stays on Wiring INTRODUCTION (EXCEPT all the time. Relays DIESEL & HYBRID) . REMOVE the foreign material from the cooling fan and shroud. TEST Foreign material contamination the system for normal operation. If Fan motor still noisy, INSTALL a new cooling Noisy electric cooling fan fan assembly. REFER to: Cooling operation. Fan Motor and Shroud . INSTALL a new cooling fan Fan blade detached from fan assembly. REFER to: Cooling Fan motor Motor and Shroud .

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DIAGNOSIS AND TESTING > ENGINE COOLING > PINPOINT TESTS

Loss of Coolant

Normal operation and Fault Conditions

The engine cooling system is a closed system providing for coolant expansion and contraction as well as changes in pressure as coolant warms and cools with engine operation. Various gaskets, seals, hoses and clamps contain coolant within the cooling system and keep other fluids and contaminants from entering the cooling system.

Possible Sources

Coolant hoses or tubes

Hose clamps

Thermostat O-ring seal or gasket

Coolant pump O-ring seal or gasket

Thermostat housing

Ford_Mustang_all_2015-2017.pdf · source reference 5902

Original technical text and illustrations, formatted as HTML. Follow the engine, transmission, equipment, model and year specified in the source. Import and layout checks do not establish applicability to every 2015–2017 Mustang. About this collection.