4-wheel drive not working
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Freshman User
Joined: Jul 2007
Posts: 46
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From: Wisconsin
4-wheel drive not working
I have a 2005 F-250 6.0 liter FX4 CC. My 4-wheel wont engage when I turn the switch. The 4x4 light comes, but front hubs wont lock up unlesss i manually lock them. I know my transfer case engages because I have to manually lock my hubs in, then I have 4-wheel drive. Do I have a vaccum leak or is it electronic? Where and what should I check? Any help or suggestion is greatly appreciated.
I tried doing a search but I didnt get anywhere with that.
Truck has 69,000 miles.
I tried doing a search but I didnt get anywhere with that.
Truck has 69,000 miles.
Cargo Master
Joined: Jan 2008
Posts: 2,566
Likes: 18
From: The Great White North!
I have a 2005 F-250 6.0 liter FX4 CC. My 4-wheel wont engage when I turn the switch. The 4x4 light comes, but front hubs wont lock up unlesss i manually lock them. I know my transfer case engages because I have to manually lock my hubs in, then I have 4-wheel drive. Do I have a vaccum leak or is it electronic? Where and what should I check? Any help or suggestion is greatly appreciated.
I tried doing a search but I didnt get anywhere with that.
Truck has 69,000 miles.
I tried doing a search but I didnt get anywhere with that.
Truck has 69,000 miles.
Posting Guru
Joined: Nov 2003
Posts: 1,949
Likes: 0
From: Near DC
Easiest way to determine if it is a vacuum leak is to turn on the floor heat then move the switch to 4X4.
If the air comes out of the defrost, then you have a leak and you should do as Lee said.
This is the main culprit.
If the air comes out of the defrost, then you have a leak and you should do as Lee said.
This is the main culprit.
FTE Leadership Emeritus
Joined: Jul 2002
Posts: 42,561
Likes: 423
From: Long Island USA
For the record, when the 4x4 light comes on, the transfer case is DEFINITELY shifted into 4x4.
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New User
Joined: Aug 2012
Posts: 1
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mine is doing the something i was wounding if it would do the same with the A/C air moving from the vents to the defrost
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