Hey bro. I had the same problem with my 88 Civic. I went to a junk yard and pulled a blower motor resistor from another car for five bucks...I was soooo glad that I did because that was the problem. If you open the glove box, check to the far right. There is a fuse looking wire going into a black box. The blower motor resistor is inside there. It kinda looks like a coiled thing with a sort of hexagon base. Change it and check it out. It was pretty cool doing just this one small thing and...BAM..it was fixed..
let me know what happens..
Danny G.