Newbie Question - Which Transmission???
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Joined: Feb 2003
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Newbie Question - Which Transmission???
I have done a search on this so please don't flame me. It seems that people just describe the vehicle they have and an expert will come on and say you have the 4R100 transmission w/o describing how they came to that conclusion. The reason this is confusing is I have seen people say that ALL 5.4 liter trucks come with the 4R100. I have also seen people say that they have an F150 with the 5.4 liter and it has the 4R75 (not sure if this is correct). I don't know if the fact it is an F150 with a 5.4 that makes a difference or what. I appreciate the expert advise but would also like to know how people are coming to these conclusions (could you teach me how to fish rather than just provide me with fish?). Is there a digit or a character in the VIN code or on the inside of the door that designates one tranny over the other? Is there some other way to determine? For the record I have a 2001 F150 Lariat Scab, LSD, 4x4 package, towing package. Thanks for your help.
Postmaster
Joined: Jul 2001
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From: South Kitsap County, WA
Paul,
If you look at the door jamb sticker the transmission code will be under the "trans" abbreviation midway along the bottom.
It will have either a "U" for the 4R70W or the "E" for 4R100. It appears from my research that Ford quit putting the 4R70W behind 5.4L engines after 2001.
As you will notice by my sig line, I have a 5.4 with a 4R70W... it's also the 7700 - aka F250LD. So, not all F150's with a 5.4 from 1997 to 2001 came with a 4R100.
-Kerry
If you look at the door jamb sticker the transmission code will be under the "trans" abbreviation midway along the bottom.
It will have either a "U" for the 4R70W or the "E" for 4R100. It appears from my research that Ford quit putting the 4R70W behind 5.4L engines after 2001.
As you will notice by my sig line, I have a 5.4 with a 4R70W... it's also the 7700 - aka F250LD. So, not all F150's with a 5.4 from 1997 to 2001 came with a 4R100.
-Kerry
Last edited by kspilkinton; Apr 9, 2004 at 08:00 PM.
Senior User
Joined: Feb 2003
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From: Edmonton, Alberta
I have a 1998 5.4l with tow package with the transmission code marked as U. The shop foreman at my local dealer took a look and said I have a E4OD. The tranny dip stick says to use mercon fluid (not mercon V as required for the 4R70W). Also the pan (21 bolt) looks exactly the same as my dads 2001 F150 7700 which has Code E (4R100). I want to change the fluid in my tranny this spring but I am not 100% convinced which tranny I have. Is the code on the door jam correct ?????
Logistics Pro
Joined: Jul 2002
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From: South Dakota
Originally Posted by kspilkinton
Paul,
If you look at the door jamb sticker the transmission code will be under the "trans" abbreviation midway along the bottom.
It will have either a "U" for the 4R70W or the "E" for 4R100. It appears from my research that Ford quit putting the 4R70W behind 5.4L engines after 2001.
-Kerry
If you look at the door jamb sticker the transmission code will be under the "trans" abbreviation midway along the bottom.
It will have either a "U" for the 4R70W or the "E" for 4R100. It appears from my research that Ford quit putting the 4R70W behind 5.4L engines after 2001.
-Kerry
Both are good trannys, and I wouldnt be concerned with durability with either one if they were maintained properly.
Postmaster
Joined: Jul 2001
Posts: 4,038
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From: South Kitsap County, WA
Originally Posted by superrangerman2002
My 2002 F-150 5.4L S-crew has the 4r70w, I'm pretty sure that all models 97-03 with the 5.4L had either tranny.
Both are good trannys, and I wouldnt be concerned with durability with either one if they were maintained properly.
Both are good trannys, and I wouldnt be concerned with durability with either one if they were maintained properly.
The 4R70W has been a good tranny for me. No problems.
RT- Climb under it and check the pan dimensions. I believe we have a chart or a link to one that indicates what either pan looks like. I posted in the tranny section about the fluids and mistakenly told somebody else that Mercon V and Mercon is interchangeable... IT IS NOT per a TSB from Ford! So make sure you ID the tranny. It's possible the tranny is not the one on the door code.
-Kerry
Last edited by kspilkinton; Apr 10, 2004 at 09:51 PM.
Senior User
Joined: Sep 2002
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From: North Bay, ON
Question - Is or is not the E4OD just another name for a 4R100. Are they or are they not the same transmission. If not, then where does the E4OD fit in. Was it a tranny used between the C-6 production years and the 4R70/4R100 ?? An inquiring mind wishes to have this clarified so as to not look stooooopid in the future. Thanks.
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Logistics Pro
Joined: Jul 2003
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From: Lawton, Oklahoma
I dont know that you can say they are exactly the same transmissions as they tend to change nomenclature with added features, usually for electronic upgrades. But essentially the E4OD and 4R100 are the same family. 4R70W is the latest of the AOD, AODE family. Hope this helps.
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Senior User
Joined: Sep 2002
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From: North Bay, ON
Thanks HomerWinzlow, that does clarify it a bit. I thought it was just that some shop manuals said E4OD because that is what that tranny started life as, and other shop manuals used 4R100. I did not know that upgrades within the same basic line got name or nomenclature changes. Makes sense. Personally, I preferred the C-6 and wish they still had it, even if only as an option. I liked the C-4 in my 1966 Mustang too, except it wasn't really strong enough for the hard racing I put it through. Kept taking out the second gear servo. Also, I could probably rebuild one of those. I ain't got an icecube's chance in Phoenix of rebuilding one of the new electronic ones.
Logistics Pro
Joined: Jul 2003
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From: Lawton, Oklahoma
They have to change the nomenclature/model number to prevent people from mismatching the transmission to certain model years. Otherwise you would be getting tansmissions designed for PCM computer commanded valve bodies going into an 89 Crown Victoria or an AOD being put in a 2003 F150 because they may all look alike. Torque convertors are now electronically locked in and valve bodies can have electronic solenoids commanded by the PCM to vary shift points under certain load conditions. The physical structure of the transmission may be the same but these changes will make them incompatible to various generation vehicles.
