Symptom Chart: Transmission Cooling

WARNING: This page is about a different variant/trim than selected.

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

Symptom	Possible Sources	Action
Transmission overheating	Clogged transmission fluid cooler or transmission fluid cooler tubes Bent or crushed transmission fluid cooler tubes Transmission fluid cooler thermal bypass valve stuck closed (if equipped) Transmission auxiliary fluid cooler can get covered with mud.	INSPECT the transmission fluid cooler, transmission fluid cooler tubes and transmission fluid thermal bypass valve for damage or plugging. INSTALL new components as necessary. CLEAN the transmission auxiliary fluid cooler exterior. REFER to: Transmission Fluid Auxiliary Cooler Cleaning .
CLEAN the transmission auxiliary cooler exterior.	System leaks	INSPECT transmission fluid cooler and transmission fluid cooler tubes for leaks. SERVICE as required.
Internal transmission concerns		REFER to: Automatic Transmission .
Vibration - a high frequency (20-80 Hz) that is felt through the seat or gear shifter. Changes with engine speed	Transmission fluid cooler tubes grounded	CHECK the transmission fluid cooler tubes. REFER to: Transmission Fluid Cooler Tubes .