Fluid Leakage in Torque Converter Area
WARNING: This page is about a different car, the 2006 Mercury Grand Marquis and 2006 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.
Leakage at the front of the transmission, as evidenced by fluid around the torque converter housing part of the case, may have several sources. By careful observation, it is possible in many instances to pinpoint the source of the leak before removing the transmission from the vehicle.
The paths which the fluid takes to reach the bottom of the torque converter housing part of the case are shown in the illustration. The 5 numbers in the illustration correspond with the 5 flow path steps.
LEAK PATH SYMPTOM & POSSIBLE SOURCE
| Leak Path | Symptom | Possible Source |
|---|---|---|
| 1, 2 and 4 | Leak at the front of the transmission | Pump lip seal |
| 1, 2 and 4 | Leak at the front of the transmission | Vent |
| 1, 2 and 4 | Leak at the front of the transmission | Converter hub weld |
| 1, 2 and 4 | Leak at the front of the transmission | External pump seal (large) |
| 1, 2 and 4 | Leak at the front of the transmission | Pump-to-case screws |
| 1, 2 and 4 | Leak at the front of the transmission | Pump gasket |
| 3 | Leak at the front of the transmission | Torque converter seal weld |
| 3 | Leak at the front of the transmission | Torque converter stud |
| 5 | Leak at the front of the transmission | Engine oil leak; rear main seal |
| 5 | Leak at the front of the transmission | Engine valve cover |
| 5 | Leak at the front of the transmission | Oil galley |
| 5 | Leak at the front of the transmission | Engine oil pressure sensor |