Thunderslide

My dad has a 97 (I think) ford expedition. On his 4wd selector he has automatic 4wd. I have always like that for winter driving well at least the concept of it. I kicks in and out as needed, granted a little retarded after sensing slippage and then engaging. On my 08 f-150 I do not have that option, as I see it Chevy has the advantage there. Is there a reason Ford stopped making that system? Was it ever available in the f-150. I suspect they had issues at higher speeds it kicking in? There must be a logical reason.

dilloncawthon

i've always seen that feature as for someone that doesn't really know when to engage 4wd or not. that's why it's mostly used in SUV's. stuff like that where someone that may not really know much about 4wd is driving so they just leave it on the auto position and don't worry about it.

MHC-F150

It has never been in an F150, but continues in the Expy models.

The Automatic simply kicks 4WD in for a short duration while it feels wheel slippage, then simply throws it back into 2WD when traction is good.

Friend has this on his Tahoe, but hates it, so he only uses the 4Hi setting, never the Auto.

ford4wd08

i personally just see that system as something else to break

Thunderslide

I agree and when the wheels are already slipping is not a time to engage the front wheels. I just thought if it had a clutch that would bring it up speed but that like too complicated and slow to be affective. Chevy guy in the next cubicle goes on and on about it. The real reason for the question was how fact can I go in 4WD thread on the forum. Personally I would rather spend the $$ on fuel than have spinning and non spinning(or slower spinning) parts try to mesh.

MHC-F150

+1

Agree 100%