Won't go into 4x4 low
Hey guys and gals,
I have 04 F350 6.0 with the Electronic Shift on the Fly (I think this is what it is called, has the switch on the dash that reads 2wd high, 4wd high, and 4wd low) hubs have automatice setting and manual lock.
I went up to the local mountains for a day in the snow with the family, came to a road covered in ice, put 'er into 4wd low and manually locked the hubs. Worked great. When I got off the ice and headed back to the local town, I unlocked the hubs, put 'er in 2wd high and the truck felt like it was still in 4wd low. The 4wd light stayed on.
Went to a local garage in town and the mechanic said "it happens to these truck all the time up here, especially if you make a hard turn" which I did. So he jacks up truck and low and behold it comes out of 4wd, light turns off. He said they sometimes bind and by jacking up the front wheels and turning them by hand usually frees 'em and you're good to go.
Now when I went camping 2 weeks ago, I got stuck in a rut with my toyhauler in 2wd and when I tried to put it in 4low it would not do it! I put it in 4wd high, locked the hubs, dug around the weght distributing hitch that was in the ground and was able to get 'er out.
I have read that a vacuum leak can cause problems with these trucks, but my A/C system works fine, it does not go to defrost by default as I have read.
I suspect something mechanical. Any ideas??
2004 F350 CC LB w/ 5.5" Fabtech lift w/ 35x13.5x20 Mickey Thompson ATZ's on Moto Metal 954's
2008 Tahoe 26FS Toyhauler
2007 KTM 525 XC
2004 KTM 65 SX (son's ride)
2004 F250 5.4 w/ 8' utility bed
2008 F350 5.4 SRW chassis w/9' Royal utility bed