Clicking sound in rear of Explorer

[rogerwolfe44]

I have a 2002 Exploere XLT that recently is making a fairly loud clicking sound somewhere in the back of the vehicle. It vaguely sounds like a windshield wiper, but that's not it. I can't pinpoint the source. It starts when ignition is on and sometimes stops after a few minutes. The sound is heard when the vehicle is moving, or standing still - even when the engine is off. Any ideas?

 

[rrgone]

Welcome aboard. Pull fuse #25 under the dash and see if it stops. If so it's one of the actuators on the rear climate control unit. Here's a tutorial on how to get at those actuators for replacement:
http://redassaggie00.blogspot.com/2007/11/my-first-technical-post.html

Let us know if that's it. Good luck.