Fluid Leakage in Torque Converter Area
WARNING: This page is about a different car, the 2004 Lincoln LS. However, it is still accessible from the selected car via links, so may be relevant.
In diagnosing and correcting fluid leaks in the front pump support and gear and torque converter area, use the following procedures to locate the exact cause of the leakage. Leakage at the front of transmission, as evidenced by fluid around the torque converter housing, may have several sources. By careful observation it is possible, in many instances, to pinpoint the source of leak before removing the transmission from the vehicle. The paths which the fluid takes to reach the bottom of the torque converter housing are shown in the illustration.
LEAKAGE PATH AND POSSIBLE SOURCE
| Leak Path | Symptom | Possible Source |
|---|---|---|
| 1, 2 and 4 | Leak at front of trans | Pump lip seal |
| 1, 2 and 4 | Leak at front of trans | Vent |
| 1, 2 and 4 | Leak at front of trans | Converter hub weld |
| 1, 2 and 4 | Leak at front of trans | External pump seal (large) |
| 1, 2 and 4 | Leak at front of trans | Pump to case screws |
| 1, 2 and 4 | Leak at front of trans | Pump gasket |
| 3 | Leak at front of trans | Torque converter seal weld |
| 3 | Leak at front of trans | Torque converter stud |
| 3 | Leak at front of trans | Engine oil leak; rear main seal |
| 3 | Leak at front of trans | Engine valve cover |
| 3 | Leak at front of trans | Oil galley |
| 3 | Leak at front of trans | Engine oil pressure sensor |