4x4 Does Not Engage - Electronic Problem

[lobotomy]

I'm hoping someone can point me in the right direction.

I have a 2005 Ranger FX4 Level II. 4WD stopped working a few months ago. 4x4 indicators on dash light up when the truck is started. When I switch to
4WD or 4WD Low, nothing happens. No relay click, not shift motor sound, nothing. I replaced the switch and the 4x4CM, and that seemed to fix the problem for a few weeks, then it started to work intermittently, now it is not working again. I have the Ford repair and wiring manuals, and I followed the diagnostic charts the best I could (there are a lot of references to the $3500 ScanTool.) I am reluctant to bring it to a dealership because they will probably do the same part swapping I did to get me out the door.

Any Suggestions?

Thanks,
Tim

What's was so wrong with a manual shift lever that engineers felt the need to replace it?

 

[Ranger44]

Clean your shift motor!


Those contacts inside will mess alot up and confuse the hell out of your 4x4 shift module.

http://www.explorerforum.com/forums/showthread.php?p=1102904

 

[raascal]

Probably the shift motor - cleaning the contacts may help - I had the same problem tried JY parts - did not work had to order a motor from ford and then everything worked - good luck - don;t order from dealer - get online for 60% less than they will charge

 

[woo4x4]

Same Problem

I also have a 2005 FX4 Level II. Mine has the exact same problem. I'm taking it the Ford Dealer soon. I will let you know what they say.