1999 F-250 SD 4x4 problems. HELP!
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Freshman User
Joined: Aug 2010
Posts: 26
Likes: 0
From: Petersburg, IL
With the hubs locked manually, the front drive shaft does not turn. I was watching the U-joint at the front axle.
I just want to go to the junkyard and find a whole new front end for this damn thing.
I just want to go to the junkyard and find a whole new front end for this damn thing.
Freshman User
Joined: Aug 2010
Posts: 30
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From: New Braunfels Texas
i have a2000,4x4 manuel locks f350 with the same problem i replaced the hub and i still get that noise when i hit a bump or uneven surface i have to stop and start again then it goes away untill next time wish i could help
Posting Guru
Joined: Aug 2008
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From: Sunny, Snowy, CO
Update:
Bad news. My problem isn't solved.
I cut the lines and plugged them. Still not solved! It is a grinding sound. I could have swore it was the problem of the 4x4 trying to engage. To get the sound to go away you have to come to almost a complete stop.
So I pulled over to the side of the road to get it to stop. Then switched it back into 4HI. No problem.
Also did the 4x4 check this morning. Jacked both front tires off the ground. Spun them in 2wd, 4wd without the hubs locked, and 4wd with the hubs locked. Neither tire never once spun the front drive shaft nor the opposite tire.
I'm totally puzzled on this.
1. What the hell is that awful grinding that is happening in 2wd!?
2. Why does it stop when I am in 4wd!?
3. Why does my 4x4 not work even with my hubs locked in!?
And to make matters worse. I did a deep cleaning of my truck yesterday and thought it might be a good idea to pressure wash my engine while I was at it. Great my truck is all clean. But now it's "sputtering" and not running the way it was when I pulled it into the car wash.
Nightmare.
Bad news. My problem isn't solved.
I cut the lines and plugged them. Still not solved! It is a grinding sound. I could have swore it was the problem of the 4x4 trying to engage. To get the sound to go away you have to come to almost a complete stop.
So I pulled over to the side of the road to get it to stop. Then switched it back into 4HI. No problem.
Also did the 4x4 check this morning. Jacked both front tires off the ground. Spun them in 2wd, 4wd without the hubs locked, and 4wd with the hubs locked. Neither tire never once spun the front drive shaft nor the opposite tire.
I'm totally puzzled on this.
1. What the hell is that awful grinding that is happening in 2wd!?
2. Why does it stop when I am in 4wd!?
3. Why does my 4x4 not work even with my hubs locked in!?
And to make matters worse. I did a deep cleaning of my truck yesterday and thought it might be a good idea to pressure wash my engine while I was at it. Great my truck is all clean. But now it's "sputtering" and not running the way it was when I pulled it into the car wash.
Nightmare.
Thread Starter
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Freshman User
Joined: Aug 2010
Posts: 26
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From: Petersburg, IL
I am not sure how you were judging if the wheels are turning in 4WD. You can try this. Put it on jack stand with the hubs locked and in 2 Hi. Turn each wheel by hand and see if the front drive-shaft turns. Easiest if you can get both fronts off the ground at once. If you can get both front up turning one wheel should turn the other and the drive-shaft. This will tell you if both sides are locking.
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Posting Guru
Joined: Aug 2008
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From: Sunny, Snowy, CO
Then you're not in 4WD...Your hubs aren't locking. They should be locked (no vacuum) when the engine is off. At least mine does it. No clue.
Freshman User
Joined: Aug 2010
Posts: 30
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From: New Braunfels Texas
ok so i took of the part that locks in the shaft to the hub and i found that there was little to no grease the bearing had hard places in it so cleaned everyting with wd40 and re packed the bearing and WOW what a diffrence no more nosie's
Laughing Gas
Joined: Apr 2005
Posts: 910
Likes: 8
From: West-Central New York
I'm 98% sure you have the same problem I had and so that's why I offered the advice.
I do understand why you tried to find easier parts to blame. I did the exact same thing. There's only so much you can replace on these front ends before you have to stare at that stupid unit bearing system.
The needle bearing that supports the stub axle inserted into the rear of your unit bearing is shot, kablooey, burned out, wasted...
I don't have any pictures to pinpoint the faulty parts but they are there:
[locking hub] - [unit bearing] - [needle bearing] - [stub axle]
What happens is that in 2wd that axle stub is just bouncing around like crazy because it can't stay in alignment with the hole in the hub. There is no bearing for it to ride (scratching, grinding, thunking noise).
When in 4wd the shaft is now spinning at the same speed as the hub and since the speed of the hub matches the speed of the axle stub it stays in place much more easily (no more noise).
The end.
I do understand why you tried to find easier parts to blame. I did the exact same thing. There's only so much you can replace on these front ends before you have to stare at that stupid unit bearing system.
The needle bearing that supports the stub axle inserted into the rear of your unit bearing is shot, kablooey, burned out, wasted...
I don't have any pictures to pinpoint the faulty parts but they are there:
[locking hub] - [unit bearing] - [needle bearing] - [stub axle]
What happens is that in 2wd that axle stub is just bouncing around like crazy because it can't stay in alignment with the hole in the hub. There is no bearing for it to ride (scratching, grinding, thunking noise).
When in 4wd the shaft is now spinning at the same speed as the hub and since the speed of the hub matches the speed of the axle stub it stays in place much more easily (no more noise).
The end.
Laughing Gas
Joined: Apr 2005
Posts: 910
Likes: 8
From: West-Central New York
Weird. It says the last post was at 8:21 and mine was 10:35.
Oh well, you got your issue fixed. Glad to hear it wasn't the needle bearings.
Maybe this will help someone in the future.
Oh well, you got your issue fixed. Glad to hear it wasn't the needle bearings.
Maybe this will help someone in the future.
Thread Starter
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Freshman User
Joined: Aug 2010
Posts: 26
Likes: 0
From: Petersburg, IL
I think I will buy new hubs.
Should I get these here? 2000 Ford Excursion 4x4 Front Wheel Hub Bearing Set: eBay Motors (item 130392632938 end time Aug-16-10 12:55:15 PDT)
Should I get these here? 2000 Ford Excursion 4x4 Front Wheel Hub Bearing Set: eBay Motors (item 130392632938 end time Aug-16-10 12:55:15 PDT)
Thread Starter
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Freshman User
Joined: Aug 2010
Posts: 26
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From: Petersburg, IL
Yeah Oreilly priced me at $115 each today. I think I will just get the set off ebay for $160.
Here are some of the center manual locks.
FORD F-250 F-350 F450 & EXCURSION 4X4 AUTO LOCKING HUB : eBay Motors (item 220647329021 end time Aug-07-10 02:52:32 PDT)
Warn Standard Manual Locking Hub 99-04 F250 F350 Diesel: eBay Motors (item 120591873481 end time Sep-02-10 07:22:37 PDT)
Once I figure out the problem with my truck missing from pressure washing the engine (hopefully tomorrow when I put new plugs and boots in it) I will get the hubs bought and put on.
Here are some of the center manual locks.
FORD F-250 F-350 F450 & EXCURSION 4X4 AUTO LOCKING HUB : eBay Motors (item 220647329021 end time Aug-07-10 02:52:32 PDT)
Warn Standard Manual Locking Hub 99-04 F250 F350 Diesel: eBay Motors (item 120591873481 end time Sep-02-10 07:22:37 PDT)
Once I figure out the problem with my truck missing from pressure washing the engine (hopefully tomorrow when I put new plugs and boots in it) I will get the hubs bought and put on.