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ill start off by saying my car hasnt been abused nor babied,
its done a few burnouts, each not extreme
its done a doughnut or two before
its been raced less than 5x (which reminds me, i hate ls 1 trans ams :tongue )


i was just driving along the other day and for maybe the fifth time my car completely hesitated around 3500 rpms (which is does it at the same rpm range every time). I dont know a lot about automatic trannys, so is it slipping or whats going on? Either way no good can come from an automatic. has anyone heard of the 05 trannys having a slipping problem before? I talked to one guy who said he traded one in because the tranny strarted slipping. thanks in advance
 

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I have not heard to many stories about the autos, other than they are quite weaker than their predecessor 4 speed unit. Usually when a tranny slips, the engine does not hesitate, the Engine RPM's raise up high, (4-6K RPM), but the car does not go forward. Similar to slipping clutch in a manual. If this is what your car is doing, then yes, you could be slipping, but if the engine is hesitating, stumbling, etc, then you some other issue, like a coil pack, lean condition, bad gas, etc..
 

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I work for the campany that remanufactures the 5R55S. We have had very few arrive so far. The S is very similar to the 5R55N and W. It does have some minor mods that make it last a good bit longer than before. If 5th gear acting up, take it in. It could be a band, the solenoid pack or a PCM issue. The dealer can download the code and determine if it is a repair or replace. I have been told by Ford engineers that a return rate of 1% is expected. I would bet the problem is the solenoid pack based on your symptom description. And yes, the OEM units are made in France. The rumor mill is the 2007 or 2008 will use the new six speed auto that is being jointly developed with GM.
 

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What company does make these trannys? Also, how long are they supposed to last before needing a rebuild? :?:

Thanks!
 
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