4x4 HELP!!!!
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4x4 HELP!!!!
PLSS HELP I HAVE A 4X4 1976 FORD F250 LONGBED ..PROBLEM:4X4 WONT LOCK OR WORK I SHIFT IT I BELIEVE DOWN OR UP AND TRUCK FEELS HEAVY WHEN PRESSING GAS I SHIFT IT THE OTHER WAY FEELS NOT AS HEAVY .. POSTED A THREAD LAST MOTNH GUY SAID TO LOCK THE HUBS BUT THE TRUCK DOESENT HAVE ANY HUBS IN THE TIRES PLSS HELP PICTURES OR VIDEOS WILL HELP DRASTICALLY
Posting Guru
Joined: Jul 2011
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From: Virginia Beach, VA
Well something is not right can you take some pictures of your hubs and of your transfer case?
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Tuned
Joined: Jan 2010
Posts: 470
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From: San Diego, CA
Sounds like you have an NP 203 transfer case. I hated mine, but lets work with you have. When placing it in 4wd are you on flat ground? If so, place the transmission in neutral. The 203 has an upside-down question mark kind of pattern to it. Neutral is in the middle and it will place the transmission in neutral as well as the transfer case. To the passenger side and forward you have a locked 4wd "Hi". To get to a locked 4wd "low" you have to push the stick forward to the right and then forward. The "Lock" light under the dash will illuminate when the case is locked out. You also have a low range not locked as well. The great piece to the 203 is the range box, but the chai drive is the weak link to it and the weight. Play with it and you"ll figure it out.
New User
Joined: Mar 2012
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I have a 2008 F-250 that won't lock into 4x4 unless I lock the hubs in manuelly. Is there an electrical device that will stop it from functioning correctly?
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Junior User
Joined: Jan 2012
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From: Farmington, MO
gsaldivar, if memory serves;
If your truck is full-time 4x4, i.e. no manual front hub lock outs, then the truck will be in 4x4 up to 15 mph. Full-time is sometimes described as "automatic hubs" by some, as opposed to "lock-outs". At 15 mph and above the truck is in 2x4 (aka "2 wheel drive" from the 70's) unless the shifter is in one of the 4WD positions. If the truck really has automatic hubs and you are able to verify that the front tires are not pulling then there may be a problem with the transfer case or another part of the front drive train. You shouldn't be able to get scratch with just the rear tires from a dead stop. If it were mine I would take it out on a gravel road, driveway or grassy area and punch it to see if all tires grab / spin.
If any of this is inaccurate I'm sure someone will add the necessary corrections.
Good Luck!
If your truck is full-time 4x4, i.e. no manual front hub lock outs, then the truck will be in 4x4 up to 15 mph. Full-time is sometimes described as "automatic hubs" by some, as opposed to "lock-outs". At 15 mph and above the truck is in 2x4 (aka "2 wheel drive" from the 70's) unless the shifter is in one of the 4WD positions. If the truck really has automatic hubs and you are able to verify that the front tires are not pulling then there may be a problem with the transfer case or another part of the front drive train. You shouldn't be able to get scratch with just the rear tires from a dead stop. If it were mine I would take it out on a gravel road, driveway or grassy area and punch it to see if all tires grab / spin.
If any of this is inaccurate I'm sure someone will add the necessary corrections.
Good Luck!
Last edited by '79Fordpilot; Mar 25, 2012 at 01:26 PM. Reason: clarification / for OP
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New User
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4x4 help!
My 2008 F-250 has the auto/ lock out hubs. The front wheels do not spin if I simply switch to 4x4 high inside the cab. I think they lock in if I select 4x4 low. However, if I manually lock the hubs in on the hubs themselves, they lock.
Hotshot
Joined: Jan 2011
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From: THIS IS SPARTA!, ...Mo.
The only way to engage/disengage the 4x4 is to move the transfer case shifter. That's all you get. There are NO electrical parts to this system. period. If your 4x4 doesn't work, there's a mechanical problem with the drivetrain. That's all there is to it.
I had a stripped front pinion on my truck when I discovered the front axle wouldn't turn. These old trucks either work or they don't. There's no fuse or vacuum line to fail like on a new truck.
I had a stripped front pinion on my truck when I discovered the front axle wouldn't turn. These old trucks either work or they don't. There's no fuse or vacuum line to fail like on a new truck.
Moderator
Joined: Jan 2006
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From: Waterloo IL
On a full time truck (NP203) the truck is in 4x4 at all times, there is no 2wd, period. The only you could get the truck in 2wd is remove one of the drive shafts but then the truck would not move, but if you shifted it to lock then it would move and you'd only have 2wd as one driveshaft would be missing. They aren't auto hubs. Its 4x4 all the time, hense the name. In 4x4 high or low you have an open differential in the t-case. In 4x4 hi lock or low lock that center differential is locked. There is power to all 4 wheels at all times, they aren't locked together but they are all pulling.
If the truck moves in a non-locked range the 4x4 is working. If it wan't the truck would not move.
If the truck moves in a non-locked range the 4x4 is working. If it wan't the truck would not move.
Junior User
Joined: Jan 2012
Posts: 51
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From: Farmington, MO
On a full time truck (NP203) the truck is in 4x4 at all times, there is no 2wd, period. The only you could get the truck in 2wd is remove one of the drive shafts but then the truck would not move, but if you shifted it to lock then it would move and you'd only have 2wd as one driveshaft would be missing. They aren't auto hubs. Its 4x4 all the time, hense the name. In 4x4 high or low you have an open differential in the t-case. In 4x4 hi lock or low lock that center differential is locked. There is power to all 4 wheels at all times, they aren't locked together but they are all pulling.
If the truck moves in a non-locked range the 4x4 is working. If it wan't the truck would not move.
If the truck moves in a non-locked range the 4x4 is working. If it wan't the truck would not move.
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