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Differential destruction

 
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raypmcc



Joined: 09 Jan 2008
Posts: 16
Location: shelby montana

PostPosted: Sat Apr 19, 2008 5:29 pm    Post subject: Differential destruction Reply with quote

the diff on my '79 Fiesta has been destroyed 2 x!! Sad Sad I tow the Fiesta long miles behind motorhomes that I deliver........the trans is just fine = no problems.........the first diff. lasted about 30K towed miles; the 2nd, a well worn replacement, lasted abt 17K towed miles.......anyone have experience towing a Fiesta MKI long distances without problems of this sort, or know anyone who has? I'm now on my 3rd trans in 1.5 yrs........hate to tear this one up too! only anamoly is sometimes that for some odd reason the right front tire/wheel tucks in slightly @ bottom, and then does not straighten up until car is unhooked & driven - - - this apparently happens when turning. Pls help!
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daily driver is tan '79 Fiesta - towed behind motorhomes I deliver
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Dave A



Joined: 05 May 2007
Posts: 158

PostPosted: Sat Apr 19, 2008 8:07 pm    Post subject: Re: Differential destruction Reply with quote

raypmcc wrote:
the diff on my '79 Fiesta has been destroyed 2 x!! Sad Sad I tow the Fiesta long miles behind motorhomes that I deliver........the trans is just fine = no problems.........the first diff. lasted about 30K towed miles; the 2nd, a well worn replacement, lasted abt 17K towed miles.......anyone have experience towing a Fiesta MKI long distances without problems of this sort, or know anyone who has? I'm now on my 3rd trans in 1.5 yrs........hate to tear this one up too! only anamoly is sometimes that for some odd reason the right front tire/wheel tucks in slightly @ bottom, and then does not straighten up until car is unhooked & driven - - - this apparently happens when turning. Pls help!


Not sure if I can help here but what exactly happens to the differentials?
As far as the RF wheel tucking in, since the steering would have to be left unlocked while towing, could it be something to do with the length of the tow bar or the front end alignment on the car itself? You may have to get the type tow unit where the front wheels are up off the ground.
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raypmcc



Joined: 09 Jan 2008
Posts: 16
Location: shelby montana

PostPosted: Sun Apr 20, 2008 10:49 am    Post subject: differential destruction Reply with quote

We really don't know for sure what is breaking up - - the shop that repairs for me is small w/only 1 mechanic - - he's VERY busy, so we only got abt. halfway into the trans before I left on this trip......I'm NOT a mechanic - - more a tinkerer........as the diff fails, it starts to lock-up from pieces jamming, then I lose the ability to turn the car......a really scary situation! .......the 1st time I drove it back from Bonneville Salt Flats - - nearly 800 miles to Shelby, Montana......the 2nd time, it happened just 25 miles away, & it was almost unsteerable by the time I got home.......
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