please help 4x4 problem
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please help 4x4 problem
i got a 1994 ford f-150 and i have a 4x4 problem. when i go and lock the hubs in and put it in 4x4 and put the break on and give it so gas. both driveshafts should not turn cause you are not going anywhere right. but when i do it the front driveshaft turns and i hear a loud noise. when that happens the axle shafts do not turn either. do you know what the problem is
Postmaster
Joined: Oct 2006
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From: Davis & Newcastle, CA
If the axle shafts can turn while the wheels stay still, with your hubs locked, then your hubs are shot.
Also if you front driveshaft can spin without the rear driveshaft, you've also got problems in your transfer case...
Also if you front driveshaft can spin without the rear driveshaft, you've also got problems in your transfer case...
Lead Driver
Joined: Aug 2006
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From: Sand Lake, MI
"the front driveshaft turns and i hear a loud noise. when that happens the axle shafts do not turn"
From what you state there, sounds like ring and pinion time.
Slight chance you have a broken axle inside the housing where you can't see it, but if that's the case you'll find it when taking it apart to get to the differential.
From what you state there, sounds like ring and pinion time.
Slight chance you have a broken axle inside the housing where you can't see it, but if that's the case you'll find it when taking it apart to get to the differential.
Post Fiend
Joined: Mar 2002
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From: Bonita Springs FL
If I read this post correctly, the problem is either not being described very well, or the poster is leaving out some really important information.
Regardless of what the problem is, it's simply not possible for the front driveshaft to be turned by the transfer case if the vehicle isn't moving. The only exception I can think of is if the rear driveshaft were completely removed from the truck, then it could either be the case, front diff, or hubs.
Also, a question - why one earth would you step on the brake and the gas at the same time? This is a really good way to destroy your torque converter in about 5 seconds.
So... can you re-explain your problem or elaborate on what else has been done to this truck?
Regardless of what the problem is, it's simply not possible for the front driveshaft to be turned by the transfer case if the vehicle isn't moving. The only exception I can think of is if the rear driveshaft were completely removed from the truck, then it could either be the case, front diff, or hubs.
Also, a question - why one earth would you step on the brake and the gas at the same time? This is a really good way to destroy your torque converter in about 5 seconds.
So... can you re-explain your problem or elaborate on what else has been done to this truck?
Postmaster
Joined: Oct 2006
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From: Davis & Newcastle, CA
Whoops, I read it wrong. Yeah if your front driveshaft can spin but your axle shafts are locked, you've got major problems in the front diff. Jack up the front and, lock the hubs, unlock the transfer case, and spin one of the tires by hand. Let us know what happens.
Elder User
Joined: Oct 2007
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From: Maine
Sounds like blown front end ring and pinion or spiders. If you hit the gas and the brake at the same time and you are in 4 wheel drive and the front drive shaft is turning but the axles in the front end are not what are you dong a brake stand wile in 4 wheel drive? Because thats the only way it the front drive shaft could turn. well that is with the front end being blown and the hubs locked
Lead Driver
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From: Sand Lake, MI
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Post Fiend
Joined: Mar 2002
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From: Bonita Springs FL
Originally Posted by ford_boy_1996
If you hit the gas and the brake at the same time and you are in 4 wheel drive and the front drive shaft is turning
However, if the front driveshaft is turned by hand and neither of the front axles turn, then he has a broken front end.
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Elder User
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From: Maine
Originally Posted by andym
Like I said, that is completely impossible.
However, if the front driveshaft is turned by hand and neither of the front axles turn, then he has a broken front end.
However, if the front driveshaft is turned by hand and neither of the front axles turn, then he has a broken front end.
Elder User
Joined: Jul 2007
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From: Agawam,MA
Need more info, guy
Originally Posted by hodernyf150
i got a 1994 ford f-150 and i have a 4x4 problem. when i go and lock the hubs in and put it in 4x4 and put the break on and give it so gas. both driveshafts should not turn cause you are not going anywhere right. but when i do it the front driveshaft turns and i hear a loud noise. when that happens the axle shafts do not turn either. do you know what the problem is
Thanks
Lead Driver
Joined: Aug 2006
Posts: 5,670
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From: Sand Lake, MI
Originally Posted by andym
Like I said, that is completely impossible.
However, if the front driveshaft is turned by hand and neither of the front axles turn, then he has a broken front end.
However, if the front driveshaft is turned by hand and neither of the front axles turn, then he has a broken front end.
If all 4 wheels are sitting on the ground for this "test" he's got biger problems than a front diff
.But I could be wrong!
Be nice if hodernyf150 would come back and better clairify his question test method.
Elder User
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From: Maine
Originally Posted by danr1
I pictured it like this, All 4 wheels off the ground, foot on brake, one lighly on gas, rear shoes out of adjustment (self adjusters froze up or just not working) allowing rear tires/shaft to turn, the front brakes holding the tires from turning.
If all 4 wheels are sitting on the ground for this "test" he's got biger problems than a front diff.
But I could be wrong!
Be nice if hodernyf150 would come back and better clairify his question test method.
If all 4 wheels are sitting on the ground for this "test" he's got biger problems than a front diff
.But I could be wrong!
Be nice if hodernyf150 would come back and better clairify his question test method.
I agree with you and I think he should give more info
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i got a 1994 ford f-150 and i have a 4x4 problem. when i go and lock the hubs in and put it in 4x4 and put the break on and give it so gas. both driveshafts should not turn cause you are not going anywhere right. but when i do it the front driveshaft turns and i hear a loud noise. when that happens the axle shafts do not turn either. do you know what the problem is
i only did that to see if the 4x4 worked when i got it. i took apart the whole axle and the gears are fine, they a worn but not enough to skip. so what could it be, if the gears are good and the axles are still not turning. dont get me wrong i am not trying to do a break stand by any way that is dumb. could it be the pinion splines are shot and they are skipping
i only did that to see if the 4x4 worked when i got it. i took apart the whole axle and the gears are fine, they a worn but not enough to skip. so what could it be, if the gears are good and the axles are still not turning. dont get me wrong i am not trying to do a break stand by any way that is dumb. could it be the pinion splines are shot and they are skipping
Lead Driver
Joined: Aug 2006
Posts: 5,670
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From: Sand Lake, MI
Your not explaining it to well.
All 4 wheels are on the ground? Off the ground?
Truck moves and is drivable in two wheel drive? no noises from the rear?
When the front shaft from the transfer case to the front axle spins, does the rear drive shaft spin too?
You say the front axles do not spin, are you looking at the u-joints just inside the front wheels? What condition is the center IFS u-joint in? (inboard of the passinger side front wheel just outside the diff, view looking up from the rear) Is it intact?
Are both front wheel u-joints intact?
What condition is the front drive shaft slip joint in? Does the front u-joint on the front drive shaft spin with the shaft?
Need more information.
Starting a new thread for the same problem was not necessary, just post to this one and let the new one get buried and pushed off the page.
All 4 wheels are on the ground? Off the ground?
Truck moves and is drivable in two wheel drive? no noises from the rear?
When the front shaft from the transfer case to the front axle spins, does the rear drive shaft spin too?
You say the front axles do not spin, are you looking at the u-joints just inside the front wheels? What condition is the center IFS u-joint in? (inboard of the passinger side front wheel just outside the diff, view looking up from the rear) Is it intact?
Are both front wheel u-joints intact?
What condition is the front drive shaft slip joint in? Does the front u-joint on the front drive shaft spin with the shaft?
Need more information.
Starting a new thread for the same problem was not necessary, just post to this one and let the new one get buried and pushed off the page.