I got a 92 SC 300 with 141k on it, the A/C after awhile will come out of all the vents cold, but for the first 5-10min only works out of the 3rd vent from the left, so the passenger's left vent. The rest of the vents blow just like room temp air I guess, its not hot, but its certainly not cold either. Any ideas? I remember reading a post on this in the past but searching brought up nothing so maybe somebody can help.

Tim