Topic Sponsor
2009 - 2014 Ford F150 General discussion on 2009 - 2014 Ford F150 truck.
Sponsored by:
Sponsored by:

Drive shaft snapped at 103K miles

Thread Tools
 
Search this Thread
 
Old 03-21-2015, 11:56 PM
  #51  
Senior Member
Thread Starter
 
FX4ord's Avatar
 
Join Date: May 2011
Location: Malibu, CA
Posts: 427
Received 6 Likes on 6 Posts

Default

Originally Posted by Thislilfishy
Well, depends, if in drive it was loading up but not turning then I'd say it's something with the diff. If it just rev's with no drive shaft rotation, then yes the tranny is pooched. I would suspect this as well if the shaft siezed violently at highways speeds. I remember my buddies Hyundai pony actually snapped a crank shaft when his rear end siezed. It was comical....your situation not so funny. Hope it works out for the best for you...well as good as it can be.

Ian
Thanks, Ian.

When they put it in drive it made some really awful sounds; loud bangs.

I could've sworn it was coming from the mid area, but I dunno.
Old 03-22-2015, 12:02 AM
  #52  
Senior Member
 
learningneverends's Avatar
 
Join Date: Jan 2015
Posts: 231
Received 33 Likes on 27 Posts
Default

When you say it wont go into drive you may have your answer right there. Do you mean when the gear selector says D nothing happens? Or is there a jolt? Or the gear selector wont even get to D? Tech is going to lie if they were allegedly checking up on your truck for 100,000+ miles. I changed my rear diff fluid at 130,000 and boy was I glad I did. What a mess. I see yours has a leak in the seal though as evidenced by the fluid on it around the outside of the gasket/bolt area. Seems like it could be fine with a slow leak. Or not. Guess that all does not mater much now though. Was the diff ever under water? The book says change the fluid if it was. Water contamination can ruin it. Good luck.
Old 03-22-2015, 12:03 AM
  #53  
Senior Member
 
learningneverends's Avatar
 
Join Date: Jan 2015
Posts: 231
Received 33 Likes on 27 Posts
Default

Originally Posted by FX4ord
Tech said diff oil was full and clean, though he can be saying that to cover their asses.

His theory (based on damaged parts) is the pinion pin (a $6.28 bolt) sheared off and allowed the pinion shaft (a $13.88 bar) to wobble loose and set free everything else ... and boom goes the dynamite.


No way is it clean. It has at least one large piece of broken gear in it. That right there defines contaminated.
The following users liked this post:
FX4ord (03-22-2015)
Old 03-22-2015, 12:08 AM
  #54  
Senior Member
Thread Starter
 
FX4ord's Avatar
 
Join Date: May 2011
Location: Malibu, CA
Posts: 427
Received 6 Likes on 6 Posts

Default

Originally Posted by learningneverends
That rear is shot. Why risk damaging your trans if its ok by running it with the bad rear in? Change the rear. Keep the new drive shaft in. Then test transmission. And pray its ok. Reverse may be fine because it was not moving 45 miles per hour in reverse when it hit an immovable force. I bet the gear it was in while moving is toast.
Probably. I don't see how this catastrophe could not damage the trans.
Old 03-22-2015, 12:16 AM
  #55  
Senior Member
 
learningneverends's Avatar
 
Join Date: Jan 2015
Posts: 231
Received 33 Likes on 27 Posts
Default

Originally Posted by FX4ord
Probably. I don't see how this catastrophe could not damage the trans.
That's the best way to think of it. And if its not true you will be super happy.
Old 03-22-2015, 12:19 AM
  #56  
Senior Member
 
deanfx's Avatar
 
Join Date: Mar 2014
Posts: 662
Received 150 Likes on 106 Posts

Default

I concur. No way in hell that diff fluid is clean. The force it took to punch a hole on the cover is crazy to imagine. I've sheared gears before and drove home in four high but damn. The transmission may surprise you though and be just fine.
The following users liked this post:
FX4ord (03-22-2015)
Old 03-22-2015, 12:27 AM
  #57  
Senior Member
Thread Starter
 
FX4ord's Avatar
 
Join Date: May 2011
Location: Malibu, CA
Posts: 427
Received 6 Likes on 6 Posts

Default

Originally Posted by learningneverends
When you say it wont go into drive you may have your answer right there. Do you mean when the gear selector says D nothing happens? Or is there a jolt? Or the gear selector wont even get to D? Tech is going to lie if they were allegedly checking up on your truck for 100,000+ miles. I changed my rear diff fluid at 130,000 and boy was I glad I did. What a mess. I see yours has a leak in the seal though as evidenced by the fluid on it around the outside of the gasket/bolt area. Seems like it could be fine with a slow leak. Or not. Guess that all does not mater much now though. Was the diff ever under water? The book says change the fluid if it was. Water contamination can ruin it. Good luck.
Diff was never submerged in water. As far as the drive deal goes, I need to talk to the other tech on Monday cause I wasn't watching his hand on the shifter or what exactly was happening. I was watching underneath. He did say drive didn't have that initial grab you feel when put in drive, so perhaps that means the shifter did physically get to D.
Old 03-22-2015, 12:37 AM
  #58  
Senior Member
 
learningneverends's Avatar
 
Join Date: Jan 2015
Posts: 231
Received 33 Likes on 27 Posts
Default

Originally Posted by FX4ord
Diff was never submerged in water. As far as the drive deal goes, I need to talk to the other tech on Monday cause I wasn't watching his hand on the shifter or what exactly was happening. I was watching underneath. He did say drive didn't have that initial grab you feel when put in drive, so perhaps that means the shifter did physically get to D.


That sounds bad to me. With a seized rear end it should grab for sure. Disconnecting the new drive shaft and running through the gears should be fine. It wont answer as much as having it all together and testing it but some questions will be answered. It wont hurt anything. Just like spinning your wheels on ice or putting it in gear with a foot on the brake.
Old 03-22-2015, 02:18 AM
  #59  
Senior Member
 
Feathermerchant's Avatar
 
Join Date: Nov 2013
Location: Euless, Tx
Posts: 2,950
Received 398 Likes on 336 Posts

Default

I would expect the dealer to drop the transmission pan and check the fluid. If it had metal in it, of course the trans is toast. It is such a simple thing to do.
Old 03-22-2015, 04:45 AM
  #60  
Senior Member
 
mechanicboy's Avatar
 
Join Date: Jan 2012
Location: Northern CA
Posts: 2,324
Received 270 Likes on 191 Posts

Default

I believe, not positive, that the speedo gets its signal from the transmission. If it indeed does then you could put the shifter in M and if the drive shaft rotates it should register on the speedo. If that happens bring the rpms up to 1k or so then slowly shift up each gear. As you shift up each gear you should see the speedo increase.


Quick Reply: Drive shaft snapped at 103K miles



All times are GMT -4. The time now is 08:30 AM.