Fluid Leakage in Torque Converter Area
WARNING: This page is about a different car, the 2008 Lincoln Navigator L and 2008 Lincoln Navigator. 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 are shown in the illustration. The 6 numbers in the illustration correspond with the 6 flow path steps.
| Leak Path | Symptom | Possible Source |
|---|---|---|
| 1, 2 and 4 | Leak at front of transmission | Pump lip seal |
| 1, 2 and 4 | Leak at front of transmission | Vent |
| 1, 2 and 4 | Leak at front of transmission | Converter hub weld |
| 1, 2 and 4 | Leak at front of transmission | External pump seal (large) |
| 1, 2 and 4 | Leak at front of transmission | Pump to case screws |
| 1, 2 and 4 | Leak at front of transmission | Pump gasket |
| 3 | Leak at front of transmission | Torque converter seal weld |
| 5 | Leak at front of transmission | Engine oil leak; rear main seal |
| 5 | Leak at front of transmission | Engine valve cover |
| 5 | Leak at front of transmission | Oil galley |
| 5 | Leak at front of transmission | Pump lip seal |
| 5 | Leak at front of transmission | Engine oil pressure sensor |
| 6 | Leak at front of transmission | Torque converter rivet |