The blower motor is one the passenger side of the van behind the rad over flow bottle.......

.....Wookee

Pull the plug and put 12 volts to it and see if it runs , Check fuses ....Nothing else either bad motor or fuse or ground.hould be simple fix , have a cold ...one...

Installed new blower motor today. Also replaced some rotted vacuum lines, PCV valve and the air filter (had to remove the doghouse)

But when I started the van, air comes out of everything but the front vents now. Bummer! What did I do, or didn't do?

I discovered that the vacuum line had to recharge itself with air! Once that happened, air began coming out the front vents. All is well.

Sweet!

Removing the Engine Cover (doghouse) is a monster of a job! I changed the air filter, PCV valve and about 18inches of vacuum hose.



Here is where the blower motor comes out and the new one goes in.

Yes. The doghouse can be a pain but look at it this way: You can do a lot of work while its raining and not see a drop of it.

Did you get this issue resolved? I have an 82 B150 with the same problem... intermittently. I discovered that it affects both a/c and heat this winter....

Nevermind. I didn't see some of the later replies when I replied......

The ground is a plug on one of the mounting bolts. They can get corroded, which would cause your exact issue. Slamming the hood made the connection shed a bit of corrosion. Unplug the wire and clean it and the lug on the mounting bolt. Use a little WD-40 and a stiff tooth brush. Plug it back in and see if that's the fix. Don't waste your time pulling the dash switch.

Welcome to the site FreightTrain