low/no air flow on '91

Does anyone know of a simple(easy) fix for the poor air flow from the ventilation system on Corsica's? I have replaced the blower motor and it didn't help and the problem is getting worse. I don't want to take the blower housing off the firewall if I don't have to. I know this is a common problem with these cars.

well I know exactly what your talking about i had the same problem and i also replaced the fan and nothing , so i decided to take the the blower housing off and what a mess i found in there, the A/C core ( if yours is equipped with it) was cover and i mean cover i could barely tell it was the core and i tried blowing all the crap out with my compressor but nothing since its gotten in there so deep, so i had to do the one thing that i didnt want to do, take out the dash and take out the heater housing ( took all day) and had to clean through the fins from inside out and vise versa , that was just the other day on saturday but i can now say i've got airflow again i noticed that iu would loose a little flow every year but thought nothing of it until thursday when it was cold and my front windshield wouldnt defrost i could hear the fan screaming but nothing was coming out, can i make one more suggestion if you have an old piece of screen , from a door or buy some cover the area where the air flows in from under the hood on the cowl panel and it should stay cleaner for a lot longer, dont know why GM would make something that is so exposed to dirt and grime especially in an area where its forced , I mean where else coulkd this shit go except into the grid, good luck guy if you need any help guiding you through just ask

take off the fan and power wash inside the housing. it WILL fix it