4x4 not working in '03
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Bleed Ford Blue
Joined: Apr 2009
Posts: 13,578
Likes: 157
From: Anchorage Alaska
4x4 not working in '03
ok my god mother has a '03 lairat 4x4 f-150 4.6. recently shes been saying it doesnt get around vey well. she said its in 4x4 but shes still all over the road. well today when she couldnt make it up her driveway and i was there i saw exactly why...her 4x4 isnt working lol
so i hopped in and took a look. the 4x4 lights are working. the t-case is shifting into 4low..but still only the rear tires spinning.
now when my grandpa had a 4x4 issue with his '03 it was the "shift fork" and that was at 15k miles.
since the t-case is working what can i do to try and narrow it down before she takes it to a shop?
so i hopped in and took a look. the 4x4 lights are working. the t-case is shifting into 4low..but still only the rear tires spinning.
now when my grandpa had a 4x4 issue with his '03 it was the "shift fork" and that was at 15k miles.
since the t-case is working what can i do to try and narrow it down before she takes it to a shop?
Hotshot
Joined: Jun 2003
Posts: 12,341
Likes: 4,368
From: SW VA
These trucks use a vaccum system on the front differential to engage and disengage the (I think) passengers side axle shaft from the splines in the differential. There is a solenoid on one of the fenders that controls vaccum to it I think.
Sorry if I'm a little short, but I haven't kept up with it much since I sold my truck over a year ago...
Sorry if I'm a little short, but I haven't kept up with it much since I sold my truck over a year ago...
Thread Starter
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Bleed Ford Blue
Joined: Apr 2009
Posts: 13,578
Likes: 157
From: Anchorage Alaska
ok, i thought there was a vacuum system also. she hit a snowbank about a week ago and set the air bags off. that could have caused an issue with the lines.
thanks guys!
thanks guys!
Senior User
Joined: Nov 2009
Posts: 147
Likes: 1
I'll put money on the actuator. mine was cracked causing a huge vacuum leak. it would not make the front tires engage. I replaced it and everything is fine. I have the PDF schematic for this if you would like to have it. email me at my user name @yahoo.com and I will email it to you.
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