94 Explorer has bad wobble when 4X4 engaged

Reply

  #1  
Old 11-07-07, 10:17 AM
Member
Thread Starter
Join Date: Sep 2007
Posts: 58
Received 0 Votes on 0 Posts
94 Explorer has bad wobble when 4X4 engaged

My 1994 Explorer exhibits an extremely bad wobble when I engage 4 low. I checked all front end components and recently got my inspection sticker (specifically asked him how the front end felt) and everything is tight. I put manual locking hubs on a few years ago and had them replaced. The tires are in good shape but I know this could be one factor or it could be transfer case wear and tear. How much movement should there be if any when I try to move the spline (I plan to remove the tires and hubs).? Anyone out there with a similar problem?

Thanks for any assistance.
 
Sponsored Links
  #2  
Old 11-07-07, 01:28 PM
Forum Topic Moderator
Join Date: Mar 2005
Location: USA - N.E.Tn
Posts: 46,160
Received 131 Votes on 117 Posts
Is it not noticable in 4 wheel high?
 
  #3  
Old 11-07-07, 09:10 PM
Member
Join Date: May 2006
Location: Iowa!!!!!
Posts: 3,968
Received 3 Votes on 3 Posts
Does it wobble when you drive straight forward or is it when you turn?

Also does it wobble when you drive on a loose or slick surface like grass or gravel?
 
  #4  
Old 11-08-07, 05:01 AM
Member
Thread Starter
Join Date: Sep 2007
Posts: 58
Received 0 Votes on 0 Posts
Hi Guys,

It wobbles only when 4X4 is engaged and I only run 4 wheel on wet surfaces. It happens when I move straight and when turning. I move at a very slow speed (less than 5mph) because I don't want to damage anything. Since I have manual locking hubs I tried engaging 4 wheel high without locking the hubs and I get a front end wobble. I can drive the truck in 2 wheel drive without any issues.

Thanks,
 
  #5  
Old 11-08-07, 05:25 AM
Forum Topic Moderator
Join Date: Mar 2005
Location: USA - N.E.Tn
Posts: 46,160
Received 131 Votes on 117 Posts
Have you ruled out the front drive shaft?
 
  #6  
Old 11-08-07, 08:07 AM
Member
Join Date: May 2006
Location: Iowa!!!!!
Posts: 3,968
Received 3 Votes on 3 Posts
My first choice would be axle joints and with the wobble in a straight drive, pretty bad. With a transfer case/drive shaft problem you can get some lurching, but what you've described occurs closer to the tires.

Hope this helps,

Bob
 
  #7  
Old 11-08-07, 08:15 AM
Member
Thread Starter
Join Date: Sep 2007
Posts: 58
Received 0 Votes on 0 Posts
Hi Guys,

I will check out the front axile this weekend.

I will also check out the U joints; it could be that something rusted or froze up because the truck had been sitting for about a year and a half before I put it back on the road.

I'm also going to check the fluid.

I appreciate your inputs.

Thanks,

Frank
 
  #8  
Old 11-09-07, 11:04 AM
Member
Thread Starter
Join Date: Sep 2007
Posts: 58
Received 0 Votes on 0 Posts
Hi,

I sprayed down the U-Joints yesterday and today I tried running it again and there was one difference:
I was able to put the truck in 4H without the wobble and this is with the hubs unlocked. I could not do that yesterday; I got the wobble when in 4H with the hiubs unlocked and I got the wobble with 2H and the hubs locked.
I could not check the front differential fluid because I could not get the plug off. I sprayed it down last night and will try again today. Would either of you at this point if what is happening points mainly towards the front differential? I know that it could still be a number of things but does the differential turn all the time; or only when in 4X4? I do plan to spay the U-Joints again and jack up the truck to see if I could isolate the problem but at this point can I assume that the transfer case is OK?

Thanks,
 
  #9  
Old 11-09-07, 11:13 AM
Forum Topic Moderator
Join Date: Mar 2005
Location: USA - N.E.Tn
Posts: 46,160
Received 131 Votes on 117 Posts
WD40 shouldn't make a lot of difference. The way to check the u-joints is to shake/turn the drive shaft while it is out of gear - not in 4x for the front. Look for play in the u-joint.

The front driveshaft should only turn when the 4x is engaged. The front axles and gears will not turn if the hubs are unlocked and the 4x is not engaged.

You should also jack up the front end and check how the wheels turn with both the hubs locked and unlocked but not in 4 wheel drive.
 
  #10  
Old 11-09-07, 01:11 PM
Member
Join Date: May 2006
Location: Iowa!!!!!
Posts: 3,968
Received 3 Votes on 3 Posts
In normal driving applications, I usually would see u joints/axle joints go first,then king pins/ball joints, then locking hubs, then transfer case, then differential.

By that time it's setting in front of the crusher.
 
Reply

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread
Display Modes
 
Ask a Question
Question Title:
Description: