Pinpoint Test C : Transmission Overheating

WARNING: This page is about a different car, the 2021 Ford Police Interceptor Utility. However, it is still accessible from the selected car via links, so may be relevant.

Normal Operation and Fault Conditions
- Bent or crushed transmission fluid cooler tubes
  - INSPECT the transmission fluid cooler tubes for damage. INSTALL new components as necessary. REFER to: Transmission Fluid Cooler Tubes .
  - INSPECT the transmission fluid cooler coolant hoses for damage. INSTALL new components as necessary. REFER to: Transmission Cooling - Component Location .
- Damaged transmission fluid cooler
  - INSPECT the transmission fluid cooler for damage. INSTALL new components as necessary. REFER to: Transmission Fluid Cooler .
  - INSPECT the transmission fluid auxiliary cooler for damage. INSTALL new components as necessary. REFER to: Transmission Fluid Auxiliary Cooler .
- System leaks
  - INSPECT the transmission fluid cooler and transmission fluid cooler tubes for leaks. INSTALL new components as necessary. REFER to: Transmission Cooling - Component Location .
- Excessive vehicle or towing loads, severe vehicle use
  - REFER to the Owner's Literature for more information on vehicle load, GVW and trailer towing.
- Incorrect transmission fluid level, condition, or type
  - CHECK the transmission fluid level. ADJUST the transmission fluid level as necessary. REFER to: Transmission Fluid Level Check .
  - COLLECT a transmission fluid sample and inspect it for debris or contamination. REFER to: Preliminary Inspection .
  - If any transmission fluid or additive other than the recommended fluid has been added to the transmission, CARRY OUT the transmission fluid exchange. REFER to: Specifications . REFER to: Transmission Fluid Exchange .
- Engine overheating
  - CHECK the engine cooling system for proper operation. For 3.3L Duratec - V6 engines, REFER to: Engine Cooling . For 3.0L Ecoboost engines, REFER to: Engine Cooling .
- Transmission cooling system clogged or restricted
  - CARRY OUT the Transmission Fluid Cooler Backflushing and Cleaning procedure. If transmission fluid cooler flow is low after backflushing, INSTALL new components as necessary. REFER to: Transmission Fluid Cooler - Backflushing and Cleaning .
- Transmission fluid cooler bypass valve malfunctioning
  - INSTALL a new transmission fluid cooler bypass valve. REFER to: Cooler Bypass Valve .
- Transmission fluid heater coolant control valve malfunctioning
  - INSTALL a new transmission fluid heater coolant control valve. For 3.0L Ecoboost engines, REFER to: Transmission Fluid Heater Coolant Control Valve . For 3.3L Duratec- V6 engines, REFER to: Transmission Fluid Heater Coolant Control Valve .
- Internal transmission concerns
  - RESOLVE any transmission performance diagnostic trouble codes (DTCs) or symptoms, especially those related to the TCC or clutch applications. REFER to: DTC Chart and Pinpoint Tests - 3.0L EcoBoost . REFER to: DTC Chart and Pinpoint Tests - 3.3L Duratec-V6 .
  - INSPECT the internal transmission components for wear or damage. INSTALL new components as necessary. REFER to: Transmission .
Possible Sources
- Damaged or restricted transmission fluid cooler tubes
- Damaged or restricted transmission fluid cooler
- Incorrect transmission fluid level or type
- Transmission fluid cooler bypass valve
- Transmission fluid heater coolant control valve
- Internal transmission components
Diagnostic steps are not provided for this symptom or DTC. REFER to: Diagnostic Methods