Condition Possible Sources Actions Loss of coolant Refer to the Pinpoint Test GO to Pinpoint Test A The engine overheats. Refer to the Pinpoint Test GO to Pinpoint Test B The engine does not reach Refer to the Pinpoint Test GO to Pinpoint Test C normal operating temperature. 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 fan assembly. REFER to: Cooling Noisy electric cooling fan Fan Motor and Shroud . operation. INSTALL a new cooling fan Fan blade detached from fan assembly. REFER to: Cooling Fan motor Motor and Shroud , Removal and Installation).
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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
Ford_Mustang_all_2015-2017.pdf · source reference 5847
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.