Which Transmission? (4R100 or 4RW70)

Reply Subscribe

Thread Tools

Search this Thread

#16

03-07-2010, 12:37 PM

benningstspeed1.0

Senior User

Join Date: May 2007

Location: SUNMAN INDIANA

Posts: 412

Likes: 0

Received 0 Likes on 0 Posts

ford has replaced mercon with merconV. they no longer supply the dealers with mercon

Reply Like

#17

03-07-2010, 09:23 PM

ronjeremy6

Senior User

Join Date: Mar 2008

Posts: 284

Likes: 0

Received 0 Likes on 0 Posts

my transmission code in the door jam is "B". anyone know which tranny this is?

Reply Like

#18

03-07-2016, 08:02 PM

MPDano

Junior User

Join Date: Jul 2003

Posts: 86

Likes: 0

Received 0 Likes on 0 Posts

I have a 1997 Expedition 4x4 with a 4.6 engine. According to the posts, I have a 4R70. I wanted to make sure this is true fro "both" 2WD and 4WD?

Thanks,
Leo

Reply Like

#19

03-07-2016, 08:44 PM

Mark Kovalsky

Fleet Owner

Join Date: Aug 1999

Location: SE Florida

Posts: 23,257

Likes: 294

Received 1,576 Likes on 1,054 Posts

Quote:

Originally Posted by MPDano

I have a 1997 Expedition 4x4 with a 4.6 engine. According to the posts, I have a 4R70. I wanted to make sure this is true fro "both" 2WD and 4WD?

Thanks,
Leo

Yes it is.

Reply Like

#20

03-07-2016, 09:11 PM

MPDano

Junior User

Join Date: Jul 2003

Posts: 86

Likes: 0

Received 0 Likes on 0 Posts

Cool, 12 quarts with TC. Right?

Reply Like

#21

03-07-2016, 09:41 PM

Mark Kovalsky

Fleet Owner

Join Date: Aug 1999

Location: SE Florida

Posts: 23,257

Likes: 294

Received 1,576 Likes on 1,054 Posts

That's about right.

Reply Like

#22

03-26-2016, 05:46 PM

LesE

New User

Join Date: Mar 2016

Posts: 1

Likes: 0

Received 0 Likes on 0 Posts

I have a 2000 Ford Expedition 4.6L and im needing a trans. What size is best? And what are the prices for used and new one's.

Reply Like

#23

03-26-2016, 08:34 PM

Mark Kovalsky

Fleet Owner

Join Date: Aug 1999

Location: SE Florida

Posts: 23,257

Likes: 294

Received 1,576 Likes on 1,054 Posts

You need a 4R70W transmission. I don't have prices, and you won't find a new one. There hasn't been a new one available for a 2000 since 2000.

Reply Like

#24

10-19-2016, 08:49 AM

EMTurbo

New User

Join Date: Nov 2002

Location: Greensburg UNITED States of America

Posts: 4

Likes: 0

Received 0 Likes on 0 Posts

swapping trans

Now we have established which trans the early Expos came with can we use the 4.6 trans in a 5.4 truck? I have a 2000 4.6 Expo but the engine gave out 20k miles after i had trans rebuilt. I bought a 99 with a 5.4 but the trans slips a bit. Rather tgan rebuild this trans can I just put my rebuilt trans in it?

Reply Like

#25

10-19-2016, 10:10 AM

Mark Kovalsky

Fleet Owner

Join Date: Aug 1999

Location: SE Florida

Posts: 23,257

Likes: 294

Received 1,576 Likes on 1,054 Posts

It depends. The 5.4L truck might have a 4R70W or it might have a 4R100. A 4.6L 4R70W should work if the truck had a 4R70W, but it will NOT work if it had a 4R100.

Reply Like

#26

10-24-2016, 10:31 AM

brentkhack

Mountain Pass

Join Date: Jan 2013

Posts: 184

Likes: 0

Received 1 Like on 1 Post

Quote:

Originally Posted by FarmLaw

I think we've come to the following conclusions on transmission oil. I hope this helps future searchers:

1. All Expeditions prior to 2003, that have the 4.6L V-8, use the 4R70W transmission. No matter what fill it came with, you can and should use Mercon V in it.

2. All Expeditions prior to 2003, that have the 5.4L v-8, use the 4R100 transmission. In all cases, you should use Mercon and NOT MERCON V in it.

This information is based on comprehensive research and some healthy reference to Mark Kowalsky, the resident transmission guru.

Now--have we figured out the 2003+ trannies? Do they all have 4R70W trannies using Mercon V?

For the 4R100 you can use Mercon V. Ford did a TSB that allows this to happen. I have switched to Mercon V myself on my 04 Navi at 150k miles. Here is the process from the Mark himself
Changing ATF Fluid in a E4OD and 4R100 transmission - Ford-Trucks.com

Reply Like

#27

11-03-2016, 09:44 PM

Colocountryboy

New User

Join Date: Nov 2016

Posts: 1

Likes: 0

Received 0 Likes on 0 Posts

99' Ford Expedition transmission issue

OK I'm having an issue with my 99' Ford Expedition transmission, I believe it's a 4RW70 transmission and it shifts from 1st to 2nd just fine when it goes to 3rd it shifts to neutral no lock up for say. Any ideas? I traced the wireing and connections look to be OK no torn or worn wires, also hooked up to a computer and no transmission codes came up. any help you'll be appreciated thanks

Reply Like