ever have a problem of low air flow out of the ac ducts?motor runs on all speed but air trickles out.any ideas?

 

I had this issue on my '87 driver's side, and on an '02 bowtie 1-ton.

 

What may be happening is your mode door actuator is stuck in between modes allowing air to be blown through vents, floor, and defrost all at the same time. Feel around those areas to see if air is coming out of there also. Anothe thing is your evaporator on the blower side is matted with debris, pet hair, or whatever.

 

i had the same on mine . It ended up to be on of the doorswere not opening right they replaced the witch on the door & it worked fine . I donot remeber if it was vacum or electric.
black 88