Symptom Chart - Transmission Cooling

WARNING: This page is about a different car, the 2009 Mercury Grand Marquis and 2009 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.

Condition	Possible Sources	Action
Transmission overheating	Damaged oil-to-air (OTA) fluid cooler	INSTALL new OTA fluid cooler. REFER to Transmission Fluid Cooler .
	Damaged, blocked, reversed, leaking or restricted cooler lines and cooler tubes	INSPECT cooler lines and tubes. REFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4R70E/4R75E article for transmission fluid cooler tube backflushing and cleaning. REPAIR as required.
	Incorrect fluid level	CHECK and, if necessary, ADJUST the fluid to the correct level. REFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4R70E/4R75E article.
	Fluid condition	CHECK fluid condition. REFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4R70E/4R75E article.
	System leaks	REFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4R70E/4R75E article for leakage inspection procedures.
	Engine overheating	REFER to ENGINE COOLING article.
	Excessive vehicle or towing loads, severe vehicle use	REFER to the vehicle specification manual for load and GVW/gross curb weight (GCW) information. REFER to the Owner's Literature.
	Incorrect engine idle or driveability concerns	REFER to the Introduction - Gasoline Engines article.