Hi guys, I am having an issue on my 1991 350SDL, for a couple of weeks, every so often when I start it up and take off, the blower for the AC won't do anything for a mile or two. After it does start up, it runs just fine until I shut the car off. Well, it seems to have progressed further, as now I can drive 15 to 20 miles and it still won't come on. I checked the 30 amp fuse, removed and cleaned, and checked that I have voltage on both sides of the fuse. I also checked fuse #5, it is new, but checked anyway, as well as checking voltage on both sides of it, so think the fuses are not the problem.

It is really weird in that once it takes off and starts running, it will go all day long, as long as I don't shut the car off, and it doesn't do it all the time. Any ideas as to where I should start looking?

Thanks!