E4OD Operation
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Postmaster
Joined: Aug 2001
Posts: 4,270
Likes: 5
From: Delaware
Torque Converter Lockup works. I got the up and downshift points fairly good, but I may tinker with them later. The EPC control works, but when I connect it, the MLPS signal gets noisy , and my Range selection jumps around. I am certain that this is due to the EPC ground current getting mixed with the MLPS return current. I have to examine the ground wiring in my controller to find this problem.
I have finished the PC board layout. As soon as I get the ground problem fixed, and get the controller working correctly with the EPC, I can order some PC boards.
Also, I have to mount the controller and route the cable.
I have finished the PC board layout. As soon as I get the ground problem fixed, and get the controller working correctly with the EPC, I can order some PC boards.
Also, I have to mount the controller and route the cable.
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Postmaster
Joined: Aug 2001
Posts: 4,270
Likes: 5
From: Delaware
I rerouted the grounds, but that didn't help. I put a bypass capacitor across the EPC current control transistor to ground, and that fixed the problem. Now the unit shifts smoothly & properly.
I am going to order some PC boards. I would like to sell some for about $50.00 each to defray my cost.
I am going to order some PC boards. I would like to sell some for about $50.00 each to defray my cost.
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Postmaster
Joined: Aug 2001
Posts: 4,270
Likes: 5
From: Delaware
Update on my controller.
I have used the truck with the new controller installed for a little while. The shifts are smooth at light throttle, but gets harsh with a little more throttle. I need to adjust the EPC table to fix that.
The only other problem is when I am cruising at 45 MPH in 3rd or 4th gear, and mash the gas pedal, the trans will downshift all the way to 1st, and cause the motor to over-rev. That will require an adjustment of the 2nd gear downshift table.
Aside from those things, it works OK.
There are a couple of things that it doesn't do.
One is that there is no OD cancel switch at this time.
The other is there is no Coast Clutch selection, so you can't do engine braking.
There is no way for someone, other than me, to adjust the shift tables.
I have the PC board on order, and have many of the components. I will build a new unit with the PC board, and look at adding some features. However, I have to send the PC board to get some Surface Mount parts installed. That will delay any more development.
I have used the truck with the new controller installed for a little while. The shifts are smooth at light throttle, but gets harsh with a little more throttle. I need to adjust the EPC table to fix that.
The only other problem is when I am cruising at 45 MPH in 3rd or 4th gear, and mash the gas pedal, the trans will downshift all the way to 1st, and cause the motor to over-rev. That will require an adjustment of the 2nd gear downshift table.
Aside from those things, it works OK.
There are a couple of things that it doesn't do.
One is that there is no OD cancel switch at this time.
The other is there is no Coast Clutch selection, so you can't do engine braking.
There is no way for someone, other than me, to adjust the shift tables.
I have the PC board on order, and have many of the components. I will build a new unit with the PC board, and look at adding some features. However, I have to send the PC board to get some Surface Mount parts installed. That will delay any more development.
Senior User
Joined: Nov 2012
Posts: 192
Likes: 0
From: Central Iowa
Update on my controller.
I have used the truck with the new controller installed for a little while. The shifts are smooth at light throttle, but gets harsh with a little more throttle. I need to adjust the EPC table to fix that.
The only other problem is when I am cruising at 45 MPH in 3rd or 4th gear, and mash the gas pedal, the trans will downshift all the way to 1st, and cause the motor to over-rev. That will require an adjustment of the 2nd gear downshift table.
Aside from those things, it works OK.
There are a couple of things that it doesn't do.
One is that there is no OD cancel switch at this time.
The other is there is no Coast Clutch selection, so you can't do engine braking.
There is no way for someone, other than me, to adjust the shift tables.
I have the PC board on order, and have many of the components. I will build a new unit with the PC board, and look at adding some features. However, I have to send the PC board to get some Surface Mount parts installed. That will delay any more development.
I have used the truck with the new controller installed for a little while. The shifts are smooth at light throttle, but gets harsh with a little more throttle. I need to adjust the EPC table to fix that.
The only other problem is when I am cruising at 45 MPH in 3rd or 4th gear, and mash the gas pedal, the trans will downshift all the way to 1st, and cause the motor to over-rev. That will require an adjustment of the 2nd gear downshift table.
Aside from those things, it works OK.
There are a couple of things that it doesn't do.
One is that there is no OD cancel switch at this time.
The other is there is no Coast Clutch selection, so you can't do engine braking.
There is no way for someone, other than me, to adjust the shift tables.
I have the PC board on order, and have many of the components. I will build a new unit with the PC board, and look at adding some features. However, I have to send the PC board to get some Surface Mount parts installed. That will delay any more development.
I could personally live with no O/D cancel, but not having the coast clutch is pretty big deal for me, and may be for some other people. Just a FYI input. I love my engine braking an without it, the Ford auto wouldn't be any better than the Dodge 4spd auto which SUCKS to say the least. Also, in case you didn't know the coast clutch is used as a fallback clutch in case of tranny failure. So, my Q, do you think you can get coast clutch working?
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,730
Likes: 2,658
From: SE Florida
The only clutch that it could replace is the OD one way clutch.
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Postmaster
Joined: Aug 2001
Posts: 4,270
Likes: 5
From: Delaware
It's awesome that you've come this far danlee.
I could personally live with no O/D cancel, but not having the coast clutch is pretty big deal for me, and may be for some other people. Just a FYI input. I love my engine braking an without it, the Ford auto wouldn't be any better than the Dodge 4spd auto which SUCKS to say the least. Also, in case you didn't know the coast clutch is used as a fallback clutch in case of tranny failure. So, my Q, do you think you can get coast clutch working?
I could personally live with no O/D cancel, but not having the coast clutch is pretty big deal for me, and may be for some other people. Just a FYI input. I love my engine braking an without it, the Ford auto wouldn't be any better than the Dodge 4spd auto which SUCKS to say the least. Also, in case you didn't know the coast clutch is used as a fallback clutch in case of tranny failure. So, my Q, do you think you can get coast clutch working?
Senior User
Joined: Nov 2012
Posts: 192
Likes: 0
From: Central Iowa
http://www.becontrols.com/ourfaqs/e4...2.htm#01190332
All the power that comes into the transmission in first through third gears comes in through the OD one-way clutch. There is also a coast clutch that will perform the same function as the OD one-way, but it is only intended to provide engine braking. Since it is only meant for engine braking it is a very small clutch pack and does not perform the work of moving the vehicle forward well, that is why you get the sluggishness. The coast clutch is only applied when OD is cancelled, or manual first or second is selected. This is why your transmission works under these conditions. In OD normal operation is that the coast clutch is off and the OD one-way is overrunning, therefore, OD works normally.
And BTW not trying to argue so correct me if I'm wrong but this is how I've always understood it. IIRC my ATSG manual says much the same thing...
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Senior User
Joined: Nov 2012
Posts: 192
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From: Central Iowa
Sorry for the confusion.
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Postmaster
Joined: Aug 2001
Posts: 4,270
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From: Delaware
This is the PC board. I have to send these out to get the Surface Mount ICs placed & soldered. Then I will load them with the other components.
The place that I am going to send the boards is in Ontario Canada, and they charge me $8.00 for each component. There are three Surface Mount Components on each board, and the cost is $24.00/board plus shipping. I have been looking for a local and/or cheaper place to get this done.
I'm going to start with 2 units.
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Postmaster
Joined: Aug 2001
Posts: 4,270
Likes: 5
From: Delaware
Controller Circuit Board with Surface Mount ICs installed.
This is the controller circuit board with the surface mount ICs installed. Now I need to load it up with the rest of the components.
Fleet Owner
Joined: Jul 2006
Posts: 20,376
Likes: 843
From: Mi'kma'ki
yikes.can't have that.