Symptom Chart - Automatic Transmission Cooling
WARNING: This page is about a different car, the 2018 Ford F-550 Super Duty, 2018 Ford F-450 Super Duty, 2018 Ford F-350 Super Duty, and 2018 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
| Symptom | Possible Sources | Action |
|---|---|---|
| Transmission overheating | Excessive vehicle or towing loads, severe vehicle use Incorrect transmission fluid level Transmission fluid condition Incorrect transmission fluid type Transmission cooling system damaged, blocked, restricted or installed incorrectly System leaks Engine overheating Diesel engine transmission fluid cooler coolant thermostat Powertrain control system electrical inputs/outputs, vehicle wiring harnesses, PCM, TCC solenoid Internal transmission concerns |
REFER to the vehicle specification manual for load and GVW information. REFER to the Owner's Literature. CHECK and, if necessary, ADJUST the transmission fluid to the correct level. REFER to: Transmission Fluid Level Check 6-Speed Automatic Transmission - 6R100 . or REFER to: Transmission Fluid Level Check 6-Speed Automatic Transmission - 6R140 . CHECK transmission fluid condition. REFER to: Diagnosis By Symptom 6-Speed Automatic Transmission - 6R100 . or REFER to: Diagnosis By Symptom 6-Speed Automatic Transmission - 6R140 . REFER to: Specifications 6-Speed Automatic Transmission - 6R100 . or REFER to: Specifications 6-Speed Automatic Transmission - 6R140 . INSPECT the transmission fluid cooler tubes for damage and correct installation. INSPECT the transmission fluid cooler and transmission fluid cooler tubes for internal blockage. REPAIR as necessary. REFER to: Leakage Inspection 6-Speed Automatic Transmission - 6R100 . or REFER to: Leakage Inspection 6-Speed Automatic Transmission - 6R140 . REFER to: Engine Cooling 6.2L V8 . or REFER to: Engine Cooling 6.8L Triton-30V - V10 . or REFER to: Engine Cooling 6.7L Power Stroke Diesel . CARRY OUT OBD. Refer to ENGINE CONTROLS - INTRODUCTION (EXCEPT DIESEL & HYBRID) or Engine Controls - Introduction (Diesel) . and REFER to: Diagnosis By Symptom 6-Speed Automatic Transmission - 6R100 . or REFER to: Diagnosis By Symptom 6-Speed Automatic Transmission - 6R140 . REFER to: Diagnosis By Symptom 6-Speed Automatic Transmission - 6R100 . or REFER to: Diagnosis By Symptom 6-Speed Automatic Transmission - 6R140 . |
| Transmission fluid leak at transmission in-tank cooler | Transmission fluid cooler tube-to-transmission fluid cooler fitting | REFER to Component Test |