2002 F150 SuperCrew 5.4 V8

I noticed today when I went to start my truck that the battery was completely dead. After a quick jump start and a drive around to recharge the battery and think about what could be causing it I finally came back home and parked. Everything ran fine when I drove it around. When I shut off the engine I noticed the fan for the heat/ac was still running with the key out of the ignition and the door open. If I turn the selector to off it turned off the fan.

I this has never happened before. Every thing shuts off when I have turned the engine off before so I am struggling to understand what could be the possible problem? Bad battery, switch some where, connection or fuse..?

Thanks in advance for any help.

 

The blower relay is stuck. It's in a small block in the center of the dash.

 

Steve83, I'm having the same problem. Is this something I can change myself and is it hard to get too. Hope you can help. Thanks.

 

I don't really know, since you haven't put ANY info about your truck in your profile or your signature. I don't have a new truck like this thread is about, and I've never had to work on one with this problem. I was just posting some info from the Ford service CD to help him find it. Take a look under your dash.

 

Turn on your 4 way flashers and listen to the flasher relay. It is somewhere above and to the right of the ALDL connector. The blower relay should be right next to the flasher.

JMC