i have An early 99 PSD anyone have a way to tell which one i have

Thnx

 

Your truck has the 4R100

 

I also had an early 99 Superduty. The 4r100 replaced the 4aod with the start of Superduty production in 1998 (early 99 trucks).

 

The 4R100 is the same tranny as the E4OD, except for the electronic controls.

The 4AOD (whatever that is) doesn't ring a bell.

If you mean the AOD - it was never put behind a diesel, of that I'm pretty sure.

The E4OD was, along with a lot of gassers.

 

ok i got the wrong letters E4OD

 

OK, that make sense

You should have the electronic version... the 4R100.

 

it's a4r100 which started it's life as a c6 to e4od to a 4r100 to a 5r110w and soon we hear to a 6r????

 

The E4OD was also electronic.

 

e4od has a electric o/d and lock up while still haveing a half way normal valve body. the 4r100 has a solinode pack in addtion to the valve body, the 5r110w has NO valve body instead it uses a solinode plate unit that has NO valves at all. all pressures and shift points are done by the pcm by way of off and ond on solinodes.

check out the new issue of ford performance trucks where we show a 5r110w being up graded to a stage 3 buildup to see the solinode plates looks, and size of the inside parts of these 4 very fine units

 

The E4OD and 4R100 are the same transmissions with different names. In '98 Ford upgraded the torque capacity of the E4OD and renamed it 4R100. The valve bodies and solenoid bodies are identical. You are thinking of the A4LD in the Explorer/Ranger that had only electronic control of the 3-4 shift and torque converter lock. That's not how the E4OD worked.

The 5R110 does not have a valve body, but there are a few valves in the pump. It also does not have any on/off solenoids, it has 7 variable force solenoids that each control pressure. With the PCM directly controlling the pressure that these solenoids produce the PCM and solenoids replace the valve body.

 

Very true... sorry for misspeaking

 

If the electronics in the e40d only control overdrive and lockup... why ,out of curiosity because i have no idea, when my vss went out and speedo was at 0 the tranny wouldn't get out of 1st or 2nd for more than minute. seemed to me like the pcm was telling the tranny to stay in the lower gears because it thought a "load" was keeping the speed from rising.

 

i know we could both go round and round for days here, but while looking alike the valve bodys of the e4 and 4r do not interchange, the flow patterns are different within the castings, the pressure regualtors are different even by part number "there are 4 differnent numbers" as is one other cast part that bolts onto the valve body, near the solinode pack "sorry brain fart on the name right now" they do share the same part number solinode pack.
as to how much control the pcm has on each i stand corrected.

haveing had the chance yesterday to have both apart at the same time i carefully checked each by eye and book checking of part numbers. a valve body of a e4 if placed on a 4r or the other way around will cause a inoperatable trans. the flow patterns are not the same.as shown in the shop manuals for each.

the ford trans that dose share the same part number valve body is the 4r and 5r55 as the extra gear comes from programing of the pcm.

the shift solinodes are a on and off switch in that the pcm controls/cycles them by switching the ground on an off. they control the shift by cycleing/switching on and off the full controled pump pressure which is limited as you state by the design of the epc solinode. the only one designed to control/limit the line pressure of the unit. but is still controled by the pcm's control of the ground . still in ways making it a on and off switch by it's pcm controled modulation of cycles of on and off ground.

all pcm's and computers control power by the switching of ground curcuits .never voltage unless done though a relay whose funtion is still ground controled by them. this is due to the computers p.c.b. "printed curcuit board" design not being able to handle more then milivolts of power.