So my 99xj has a trans leak, I don't know where it is or how it happened, yet. Jeep just got a new crankshaft sensor and wires replaced. Now when driving she starts to leak decently and it drips onto the exhaust making it smoke but she runs fine. The bottom of the pan is wet but no drips to indicate it's coming from the gasket. The underside is fairly dirty making it hard to pinpoint the leak but I plan on cleaning the underside to try to pinpoint the leak, there are also no puddles on the ground when she is just sitting. Any ideas? I know this isn't much info but was really just looking for anything.

 

Can you get some pics of the transmission? Pan, rear, etc.?