1999 Pathfinder LE transmission fluid leaks and engine codes

[OE812]

I am having major issues with my 99 Pathfinder we purchased on July 8, 2006. I had it in the dealership service dept. for a month to change out the lifters on right bank. While in the shop, I had the O2 sensor, timing belt, tensioner, and water pump changed. Now the fun starts. Picked it up last week and noticed that it started surging at 40-45mph and stalling from a stop. Then the check engine light illuminates...then it goes off...then on!? I brought it back to the dealership and they said I needed to provide a spark plug changeout and fuel system service. Keep in mind; none of this was happening prior to having them change the timing belt and 02 sensor. I drove the pathy home today and changed the plugs and went back with the NGK platinum plugs. I then cleaned the throttle body. More fun; test drove it on the highway and accelerated briskly up to 80mph and noticed lots and lots of smoke and a oily film hitting the rear windshield! I pulled over and transmission oil is everywhere. Got it home and dried off the oil underneath and spent about a hour trying to find the source of the oil but couldn't. The gaskets look fine and nothing leaking from the linkage.

I need some serious help on this one. This is driving me insane. Where do I start.

thanks,

[OE812]

I double checked and it appears to be dumping transmission fluid from the vent tube mounted to the top of the bell housing. Heavy acceleration pinpointed the problem. Is this tube supposted to have a rubber hose attached to anything?

[OE812]

Nissan Mechanic must still be at lunch?

[truckmen]

Hello,

Can't help you with the problem, myself. Do you have the OBD-II trouble codes?

[rogoman]

I double checked and it appears to be dumping transmission fluid from the vent tube mounted to the top of the bell housing. Heavy acceleration pinpointed the problem. Is this tube supposted to have a rubber hose attached to anything?

Looks like the dealer overfilled the transmission.