4 x 4 Troubles
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New User
Joined: Jan 2007
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4 x 4 Troubles
i have an 03 F150 FX4 with 85000 kms and never ending problems, rear end chatter, leaking rear end front seal, wheel bearings, battery cable, the latest is with th 4 X 4.
when i turn the switch to engage 4X4 the light comes on and its makes all the noises and you would believe that it is in fact it is in 4 wheel drive but only the back wheels are turning, any suggestions or toughts as to what may be causing this problem would be appriciated, hopefully this will be something that i can fix as i have put alot of money into this pit.
when i turn the switch to engage 4X4 the light comes on and its makes all the noises and you would believe that it is in fact it is in 4 wheel drive but only the back wheels are turning, any suggestions or toughts as to what may be causing this problem would be appriciated, hopefully this will be something that i can fix as i have put alot of money into this pit.
Hotshot
Joined: Jun 2003
Posts: 12,340
Likes: 4,361
From: SW VA
The ESOF (electronic shift on the fly) is notorious for problems. There is a motor on the transfer case which shifts it into and out of 4WD. It likes to sieze up if not used. If the motor is not your problem (which it probably is), then you could have vaccum problems on the front differential.
Hotshot
Joined: Jun 2003
Posts: 12,340
Likes: 4,361
From: SW VA
I'll pull up some links for you in a minute....Here ya go. According to the second link, if the "4x4" light comes on, then the transfer case has shifted...so that would mean you have a vaccum problem at the front axle.
https://www.ford-trucks.com/forums/6...=transfer+case
https://www.ford-trucks.com/forums/6...=transfer+case
https://www.ford-trucks.com/forums/6...=transfer+case
https://www.ford-trucks.com/forums/6...=transfer+case
https://www.ford-trucks.com/forums/6...=transfer+case
https://www.ford-trucks.com/forums/6...=transfer+case
https://www.ford-trucks.com/forums/6...=transfer+case
https://www.ford-trucks.com/forums/6...=transfer+case
Last edited by ATC Crazy; Nov 23, 2007 at 11:17 AM.
Elder User
Joined: Nov 2001
Posts: 892
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From: Duluth, MN
If the light is on in the cab, your shift motor is working. it's going to be either the vacuum actuated shift fork on the front diff. or the actual actuator that supplies the vacuum.
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New User
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just checked out the vacuum lines on my truck they all seem fine, forgive my lack of experience with 4wd systems but is there some way i can test or check the shift fork or vacuum actuator.
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Originally Posted by bigun72
im glad i looked at this topic cause i got stuck today and my front tires wudnt lock in ...... the back gears down when u put it in 4lo , but the front want pull or nuttin either ...
Junior User
Joined: Sep 2005
Posts: 84
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From: Ajax, Ontario
Originally Posted by newfie-sailor
just checked out the vacuum lines on my truck they all seem fine, forgive my lack of experience with 4wd systems but is there some way i can test or check the shift fork or vacuum actuator.
New User
Joined: Sep 2007
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If you pull the cover off the vacuum actuator and look at it while someone shifts the truck into and out of 4 wheel you'll be able to see if its moving (truck on ofcourse). If the vacuum actuator doesn't move the shift fork lever about an inch its probably not engaging. Grab a pair of channel locks or pliers and slide that lever back and forth manually a few times. This should break it loose. Don't wory, you won't break the lever unless your really reefing on it. My mechanic told me to do this and it ended up working great for me. He said that's all he does when they come into the shop.
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From: Jackson,Tn
Originally Posted by newfie-sailor
keep me posted, hope u figure out your problem
IM BOUT READY TO KICK THE PERSONS A$$ WHO DESIGNED THIS !!!!!!!
