i have a 1990 6speed and the air only comes out of the floor and defrost i know that on a ford that means a vac. leak are vettes the same and if so where are the problem spot usally at. one more thing i noticed that there is some oil sitting on top of the front of my transmisson. in the center under the distributer. have anybody else had that problem planning on tearing stuff out till i see the leak it there something back there that is known to leak

thanks mark

 

i was reading some of the other post and i think i have the oil leak figured out but the vents on the other hand.

 

Good morning Mark, I don't have any experience on the '90's. The vents are typically operated with vacuum, under-dash is tough to get at but I would check for broken or disconnected vacuum lines in the heater box area and/or heater control. It's also possible that a foreign object fell down the defrost vents and has jammed the directional dampers. If the car has not been used for extended periods then it is also possible that rodents have nested in the heater box, I've seen where they chew through the vacuum tubing too. Good luck, Bob

 

thanks ill start digging