Hello, trying to fix a 99 Sienna for a friend.
Friend was towing a trailer and pulled over to find fire under the vehicle.
Towed it to my house and after looking under it, I find ATF (red) all over the bottom of trans/differential and lots of soot from where things were burning/smoldering.
I removed the exhaust heat shields directly below the engine and find that the exhaust manifold has a massive Y-shaped crack in it as if someone ran the vehicle up on a pile of rocks. Exhaust is certainly leaking out of the crack at idle.
I find catalytic-converters and exhaust systems on rockauto for 350 delivered, but that still won't fix my ATF leak.
What is a common source of ATF leak under these vehicles? I removed the inspection plate and the backside of the torque converter looks dry so I'm hoping it's not the rear main seal of the transmission.
Please help, I can post pictures if needed.