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Home >> Ford >> 2023 >> Mustang Mach 1, Automatic Trans >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Engine Cooling - 5.0L 32V Ti-VCT (359KW/486PS) (WU)/5.0L Ti-VCT V8 (343KW/466PS) (MF) >> Diagnosis And Testing >> Engine Cooling >> Symptom Chart

Symptom Chart

Diagnostics in this article assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Diagnostic Methods .

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 normal operating temperature. Refer to the Pinpoint Test GO to Pinpoint Test C 
The electric cooling fan is inoperative in one or more speeds or does not operate correctly. Wiring
Relays
Fuses
Cooling fan motor
REFER to: Cooling Fan Control .
The electric cooling fan stays on all the time. Wiring
Relays
REFER to: Cooling Fan Control .