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Transmission Replacement/Swap?

Thread in 'Aftermarket Parts' started by Tyler Brown, Aug 8, 2017.

  1. Tyler Brown

    Tyler Brown Member

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    Hey guys. I have a 2005 Sport Trac with 113k miles on it, and am having the same issue that everyone has around this mileage - the transmission is going out.



    The issues with these transmissions is, among other things, an issue with the housing. I have seen people that have made fix-kits for the housing that they claim fix some of this transmissions current issues, however, most of those kits still only last for about 100,000 miles before dying again.



    Most of the repairs shops/dealers I have contacted say that the repair/replacement will be $3,000 or $4,000, including labor and a brand new transmission. However, I can't justify spending the $4,000, knowing that I'll have to do it again in 100,000 miles. So that leads me to my current question...



    Is it possible/reasonable to put a *different* transmission in these trucks? For example, I know a lot of Sport Trac parts are exchangeable with Ranger parts. Could I use some sort of adapter to install a Ranger transmission in this truck? Or, even better, an F150 transmission?



    Thanks for any help,

    Ty
     
  2. Todd Z

    Todd Z Well-Known Member 2nd Gen Owner V6 Engine V8 Engine

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    The 5r55e that's in this ST can be changed if the "new" trans has a stand alone computer like the 5r55S or W found in the newer ST 07-10 or the mustang. ( those are blowing up too around 100-150) not all but a few. ( build 50K trucks some are bound to be bad. sad but true



    I would convert it to a manual if you could... the 01-02 ST came with a manual option.



    If not you may just have to rebuild.... Many people get more then 100K on the trans.... some go 300K.....



    the computer in the 01-05 ST controls the transmission so using a f10 or something adapted would need a lot of computer help.



    Todd Z
     
    Last edited by a moderator: Aug 8, 2017
  3. Mark K 2

    Mark K 2 Well-Known Member 1st Gen Owner V6 Engine

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    The way I understand it, a rebuild transmission will have all of the new upgrades. My mechanic said it shouldn't fail the way the original transmission did and should last as long as any other transmission.



    I rebuilt the one in my 2001 ST with 170,000 miles for $2500. I now have 40,000 miles on it with no issues.
     
  4. Robert Howell

    Robert Howell Active Member 2nd Gen Owner V8 Engine

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    200,000 km on our 2001 since the transmission rebuild (valve body gasket blowout took out a clutch). We took the transmission to a shop that had a Ford "specialist" that had some ideas on making the 5R55 bulletproof as well as all of the Ford updates. I also added a spin on transmission filter (12 micron) and a large transmission cooler to extend the life. He went over all of the things he did at the time (all of which I have since forgotten) but this transmission shifts strong and has given us no trouble.

    I have taken it in twice for transmission service since it was installed to assure we get as much life out of it as possible. Clean oil with fresh additives and keeping the oil cool with go a long way in extending transmission life in my experience.
     
  5. J Piroth

    J Piroth Well-Known Member 1st Gen Owner V6 Engine

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    I've been driving my '01 with the OD light flashing for a couple of months now after being told the transmission needed to be replaced. I've only got 107,000 miles on it, but it's 15 years old so I'm not keen on dropping $2-3K on fixing it. It's a shame, because I'm still very happy with the trac overall.



    Thinking about tackling replacing the transmission with a rebuilt one myself to save the cost of the labor, but that would be BY FAR the biggest repair I've ever done on a vehicle.



    To anyone who's done it- is this a job that can realistically be done by someone who's not a mechanic?



    I saw someone on the Swap & Sell board is selling the repair manuals for this year and I'm perfectly fine with following directions, taking my time and busting my knuckles. I just don't want to get in over my head and end up having to have it towed to a mechanic halfway through either.
     
  6. Dean Hedin

    Dean Hedin Active Member 1st Gen Owner V6 Engine

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    Ty, what kind of issue are you having that makes you think you need a new transmission?



     
  7. Tyler Brown

    Tyler Brown Member

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    Sorry for the late reply, everyone. And thanks for your responses. After hearing the luck that you guys have had with rebuilding your transmissions, I may consider keeping it now, though, selling it certainly isn't off the table.



    @Dean: The issue I'm having is that, upon start up and acceleration, I hear a very 'fan-like' noise. I initially thought this was the fan clutch going bad, though, I now have been told that it could be, and likely is, the transmission pump. I'm also having a bit of slipping when going in and out of nearly every gear, having some issues engaging into Drive or Reverse, and get a super high-pitched metal-on-metal sound when going up hills. I'm also getting some noise from the timing chain, which is concerning.



    What's appalling to me is that all of these issues are arising in a truck that was superbly taken care of. 3k-5k oil changes, always. Transmission fluid regularly changed. Never drove like a mad-man. I just can't fathom how this is all falling apart at the same time.

     
  8. Tyler Brown

    Tyler Brown Member

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    Sorry for the late reply, everyone. And thanks for your responses. After hearing the luck that you guys have had with rebuilding your transmissions, I may consider keeping it now, though, selling it certainly isn't off the table.



    @Dean: The issue I'm having is that, upon start up and acceleration, I hear a very 'fan-like' noise. I initially thought this was the fan clutch going bad, though, I now have been told that it could be, and likely is, the transmission pump. I'm also having a bit of slipping when going in and out of nearly every gear, having some issues engaging into Drive or Reverse, and get a super high-pitched metal-on-metal sound when going up hills. I'm also getting some noise from the timing chain, which is concerning.



    What's appalling to me is that all of these issues are arising in a truck that was superbly taken care of. 3k-5k oil changes, always. Transmission fluid regularly changed. Never drove like a mad-man. I just can't fathom how this is all falling apart at the same time.

     

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