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4R100 transmission problems

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Old May 27, 2013 | 01:27 AM
  #1  
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4R100 transmission problems

Hi Lads
I'm having a few problems with the auto trans in my Austalian 2005 7.3 4x4 (which in USA is the same as a 2003 model )
Hoping for some help in diagnosing the problems before I spend a heap (about 8 to 10k australian) on a new one.
The trans shifts ok when it's cold if I don't push it to hard But as it warms up it seems to slip in first if you push it a little and will require the pedel to be backed of so it can chage in to second which is really slugish and slow same in second to third but not as bad slipping
some times it will miss second altogether and go to third with a hard change
I have the following codes up P0782,P0781,P0732
the oil level is all good as is the oil condition

There is no problems with third fourth or the lock up these are all shifting as they always have

I have a powerhungry hyda chip fitted if I run the stock it is better but still slips and shifts as above

Hoping some of you guys can help out with your experience on these trucks

Thanks
 

Last edited by Pilbarakid; May 27, 2013 at 05:21 AM. Reason: More info
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Old May 27, 2013 | 07:48 AM
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My guess is that the chip destroyed the intermediate clutch.
 
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Old May 27, 2013 | 10:33 AM
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Hi Mark thanks for the reply mate
How would the chip destroy the clutch to much power or bad shifting pattern
I ask this because the shifting did change when I fitted the chip ?

Thanks
 
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Old May 27, 2013 | 10:43 AM
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I would agree with Mark . I have seen tuners destroy mixers . They can put out more than the stock tranny was designed to handle .
 
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Old May 27, 2013 | 01:03 PM
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Originally Posted by Pilbarakid
Hi Mark thanks for the reply mate
How would the chip destroy the clutch to much power or bad shifting pattern
I ask this because the shifting did change when I fitted the chip ?

Thanks
The transmission was designed to last with the stock amount of power. When you add power you reduce transmission life. Some chips will also fiddle with the transmission program. Usually that hastens the demise of the transmission.
 
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Old May 27, 2013 | 06:43 PM
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I agree with all above but have seen completely stock 4R100's go out new with only 30K on them. Mine lasted 130K, in law put in three, at Ford, in 120K miles with know chip. So I think you are going to have to invest in a new one either way!
 
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Old May 27, 2013 | 07:12 PM
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Bugga looks like it's off to the trans shop for a rebuild there go's the budget

Is there anything I should be asking for in the rebuild to inprove the life of the trans ??
as I do tow a 4.5 ton( about 9000lbs ) boat around some times

Thanks
 
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Old May 27, 2013 | 07:18 PM
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I would ask for any known upgrades , and invest in a better cooler system . Additional filtration is another thought . An add on filter system would be nice .
 
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Old May 27, 2013 | 07:25 PM
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I would check and see if JW or BTS will ship a Trans to you, they both build a bulletproof trans. It's only $5k here but I don't know how $ converts or what shipping may be.
 
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Old May 28, 2013 | 01:14 AM
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I have sent an emial to both JW and BTS to inquire about them in Austalia but no replys as yet I think you had a holiday overthere yesterday Has anyone heard anything Good or Bad about the Ford factory HD rebuilt 4R100 HD as I can get one of them over here for around 7K fitted with 12month 20000km warranty
 
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Old May 28, 2013 | 02:25 AM
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Hi Pilbrakid, My mechanic in Perth says he can get the new upgraded trannies for around $6-7K when I last spoke with him (I believe it was BD but I could have heard wrong). PM me if you want his number, he used to be the head tool spinner down at F-Trucks in Perth. Great and knowledgable guy with alot of contacts for our trucks and brings in a lot of stuff from the US. I am interested to hear as to why the Hydra Chip would fry the tranny by itself as I am also looking at getting one but I am a little nervous now. My tranny was just rebuilt with th eupgraded VB but stock TC.
Good Luck
 
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Old May 28, 2013 | 07:35 AM
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Hi there WA 250
From what I have learnt in the past 24hours, chatting to some trans builder around OZ, I've been told the power chip creates more hp with less throttle or. Pedal depression apparently the trans clutch pressure is set by the pedal position so with less pedal there is less pressure and more power so the couch packs can slip
I have sent an email to PHP but have not had a reply as yet, I'll keep you up dated as find out more on this fast learning curve.

I've sent you a PM for the mechs details thanks
 
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Old May 28, 2013 | 07:44 AM
  #13  
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Pilbarakid,
Hi from Adelaide.
Check these out
Wholesale Automatic Transmissions

Their upgrade includes this kit

TransGo | E4OD/4R100: 4R100-HD2 Tugger</pre>They also do additional stuff including a much better torque converter.

Email them they respond quickly with plenty of friendly info.

Quoted my about $6000 plus freight to Adelaide.

Hope this helps.
 
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Old May 28, 2013 | 09:05 AM
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Thanks Aussie B. I,ll give them a call tomorrow
 
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Old May 28, 2013 | 12:21 PM
  #15  
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Lots of guys running Php tunes stateside, including myself. This is the first I've heard of their tunes causing any trans issues. My guess is that your transmission was already weak and tired, and the added power sent it packing. Most of us running tunes understand that the trans is the weak link, and that's why we love BtS and JW so much.

With the truck being down under, late model, I guess it is possible that they aren't that familiar with the tuning.
 
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