I have a 93 f250 7.3 NA 2wd e4od 204K.

I had a problem with the plug on the Solenoid pack the red wire pin and the purple orange wire pins had corroded off. I got the truck in May it has a ford reman tranny.
I ordered new pack and harness plug from Matco. Installed both, Pack had same part # and nine pins as origonal, also installed a drain plug. Now the tranny still wont shift correct. it locks up in drive and will stall at an idle.. rev. and first seem OK second locks up hard but it goes , drive free wheels after you pass the speed of first. This is how it shifted when it first failed. Then it went to limp mode after I unpluged the connectors to look for problems. Now when I look at old plug I notice that it must have arced between those two pins. I have verified in every way I know that I wired the new plug correctly, colord match and I only cut one wire at a time and traced both new and old to the pin, to make sure of no mistakes. when I pull the PCM power fuse, the trany shifts in limp mode.
With a test light I have power at the plug on both the red, and the white/red wires. with the fuse in.
I unhooked the battery cables to clear the computer. no avail.

Just got in from dropping the pan again and loosening and re torquing the pack in place while it was still warm. 90 inch/pounds, working from the middle out to the ends, no change.
Is it possible that the arcing / eating away 1/8" of the plug between and around the pins could have toasted my PCM?? If so were is it in the truck and what are my options for getting a replacement, Hopefully not a Stealership only Item.
I have tested the FILP sensor and that test A-OK. all fuses test OK. The OD light was flashing till I disconnected the Batteries. now it is off. and not flashing.
Before I ordered the pack and plug I took it to a shop to have the codes read, we couldn't get a code. I did have my neighbor verify that the pack was short a pin. at that time I thought it was only one that was gone. I now see Pin 1 and 2 are missing.
Ken Central NY

 

PCM is bolted into the firwall just below the brake booster. Plastic cover pops off, connector disconnects with a 10mm socket. Possible corrosion and bad pins there as well? Also tach and speed sensors need to be working flawlessly for proper transmission operation.

 

Both the tack and speed sensors are working perfect, I have replaced both also. the only thig I havn't replaced is the Shift lever sensor. I thought that box was the pcm, I will look at it next. It must be the one on the plastic standoff from the firewall? I got the truck out of the salt belt, there is basicly no corrosion on anything. It is pristeen. Ken

 

I am no transmission expert, but did just change my TC due to clutch slipping issues. Have you had a line pressure test done to check out the hydraulics, may be clutch pack issues! I just ordered an overhaul manual for mine, just in case my slipping issues are not totally resolved. If you can get ahold of a 93 Ford service and repair manual CD you will find all the troubleshooting / test points info to help diagnose the problem. Several members here do work in tranny shops, but I don't see them post very often. Possibly someone will be along to help out more!! Good luck

 

With your foot on the brake......That should show a code 94...

TCC solenoid circuit failure

 

After I sent the question I went out to my shop and was looking over the
old Solenoid pack, I still have both the plug and pack. I can't begin to
tell you how many times I have opened the wires up and held the old plug
right next to the new and compared wires.What I may have found is this, The
plastic cover on the old pack has the same part # as my new pack but that is
a snap off part. The Old pack's electric connecter doesn't have the back
fastening snap Lock. I now " think " when they installed this Transmition they
installed a 1995 and up, updated one and it has the newer solenoid pack in
it. from what I have read it is this one,

Solenoid assembly, E4OD, 4R100, NON-PWM, 1995-up,

and I got the older one.
Solenoid assembly, E4OD, 1989-94,
.

I now think I just bought and installed a non returnable wrong yr. pack.
&*(%$##@@!

My trucks wiring harness had the original end on it. another sign of
wrong pack is the Old pack doesn't have a sealing gasket in the packs
connector, the new pack does. They make/have and sell a different end for
95 on, most likely the harness end has the sealing gasket.

Tomorrow I am going to bring the old pack into my basement work shop and
take a close look at replacing the two missing pins, when I was looking at
it out in my shop building I saw that the pins are soldered to a connection
board that is assessable. I have a good selection of small brass rods and
also Music wire, in various sizes. I may be able to de-solder and then
remove the old and solder in new. If that works I will reinstall the old
and fill the connector with Dielectric grease and see how that works.

I may have the wrong solenoid pack. ( I may have a
solenoid pack for sale on Ebay soon.)

Does anyone know what has to be changed when they uodated the Tranny?

Thank you for your time and answeres.

Ken Hall

 

When you say 9 pins, do you mean 9 pins on the solnoid pack or 9 wires utilized. I am looking at one from an 89 and it has 10 pins on the solnoid pack. How many choices are there in packs? Don

 

Hi Don, I think there only two packs, The ones I have both have 9 pins and the conectors have 9 wires. on my service CD it states that 9 to 11 pin packs will work, but they only use 9 of them.

Ken

 

Thanks Ken. If nothing else these transmissions are a work in progress. I have a very early model here, it has 10 pins. I'll look to see how many wires used. Don

 

yea i have the same prob with my 92 and i got the plug off a 94 van but it stil has the 9 pin plug but it stil isnt shifting rite! got any ideas? thanks, andrew

 

hello Builtfordtuff,

When my packs plug shorted and burnt two pins off it also took out my computer, I did repair the pins my old pack, and I am still running it. My truck now has 249788 miles on it. this weekend it will roll threw the quarter million mark. I actually pull the plug at the tranny every time I change the motor oil and reapply dielectric grease.

I found a new computer for my truck on ebay, I also found out that any E4OD processor will work for our trucks, ford just labeled them differently. your best bet is to find a newest updated version.

I was able to get a NIB unopened for less than $30.

Good luck, hope this helps.

Ken