Swap, now E4OD won't shift
Thread Starter
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Trailering
Joined: May 2024
Posts: 22
Likes: 5
Swap, now E4OD won't shift
Good afternoon
I am new here and I need some help. I picked up a 2wd 1995 f150 a month or so ago. I drove it home and it worked great. It has a 5.8L with an E4OD. The goal was to seap the engine, transmission, and rear end into a 1988 Econoline.
Swap went well, engine runs, and the van drives. The problem I am having is the transmission will not shift through the gears while driving. It shifts when using the gear selector, but driving it down the street, it will not upshift.
I have confirmed the VSS is sending a signal to the computer, I have also cleaned the connectors on the transmission itself. I am assuming because the swap was just recent that I have missed something. I can't imagine anything wrong inside the transmission, or any other parts have failed.
Does the group have some recommendations on what the check? Also, what is imperative for the transmission to shift (engine rpm, speed, throttle position sensor, etc)?
Thank you.
I am new here and I need some help. I picked up a 2wd 1995 f150 a month or so ago. I drove it home and it worked great. It has a 5.8L with an E4OD. The goal was to seap the engine, transmission, and rear end into a 1988 Econoline.
Swap went well, engine runs, and the van drives. The problem I am having is the transmission will not shift through the gears while driving. It shifts when using the gear selector, but driving it down the street, it will not upshift.
I have confirmed the VSS is sending a signal to the computer, I have also cleaned the connectors on the transmission itself. I am assuming because the swap was just recent that I have missed something. I can't imagine anything wrong inside the transmission, or any other parts have failed.
Does the group have some recommendations on what the check? Also, what is imperative for the transmission to shift (engine rpm, speed, throttle position sensor, etc)?
Thank you.
Hotshot
Joined: Jun 2015
Posts: 12,822
Likes: 2,433
There was no E4OD in ‘88 so what wiring did you transfer over from the truck and are you using the computer from the truck or something else? Did you verify that the wiring from the truck was correctly incorporated in the van’s harness?
Thread Starter
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Trailering
Joined: May 2024
Posts: 22
Likes: 5
I left the van’s wiring harness intact. I moved the wiring harness from the f150 as a “stand alone” harness temporarily. The plan will be the incorporate it into the van after I get things confirmed working.
One mistake I may have made was cutting some stuff out of the f150 harness. Basically anything that went to the passenger side is now removed.
One mistake I may have made was cutting some stuff out of the f150 harness. Basically anything that went to the passenger side is now removed.
Thread Starter
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Trailering
Joined: May 2024
Posts: 22
Likes: 5
KOEO-111o, 10, 111c
KOER-116r, 313r, 536r, 632r
The codes made good sense because the engine was cool and the other stuff isn't hooked up.
I check the A/C volts coming out of the rear end while it was rotating and it was putting out anywhere from 1.5 volts to 4ish volts, depending on how fast the rear end was rotating. I was probing the wires from the “inside” of the f150 right at where it Ts off to go to the speedometer. Because I was seeing voltage there, I assumed the speedometer wasn’t relevant in the system and the computer would be getting a speed signal.
What elements of the dash cluster do I need for it to operate ptoperly?
KOER-116r, 313r, 536r, 632r
The codes made good sense because the engine was cool and the other stuff isn't hooked up.
I check the A/C volts coming out of the rear end while it was rotating and it was putting out anywhere from 1.5 volts to 4ish volts, depending on how fast the rear end was rotating. I was probing the wires from the “inside” of the f150 right at where it Ts off to go to the speedometer. Because I was seeing voltage there, I assumed the speedometer wasn’t relevant in the system and the computer would be getting a speed signal.
What elements of the dash cluster do I need for it to operate ptoperly?
Thread Starter
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Trailering
Joined: May 2024
Posts: 22
Likes: 5
I should have clarified. I am using everything from the f150 that is needed to run the drivetrain. Computer and wiring harness.
I am going to look at hooking up the PSOM in the next day or so. I only want to use what is necessary to make the unit work, if anyone can help me out with that.
Thanks!
I am going to look at hooking up the PSOM in the next day or so. I only want to use what is necessary to make the unit work, if anyone can help me out with that.
Thanks!
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Fleet Owner
Joined: Oct 2005
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From: Kentucky
The raw VSS signal goes to the PSOM, after passing by the RABS control module. The PSOM divides down the VSS signal for use by the speed/odometer, computer (PSM) and speed control module. You need the PSOM to convert that raw VSS signal for the PCM and speed control. Or come up with a similar frequency converter.
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Thread Starter
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Trailering
Joined: May 2024
Posts: 22
Likes: 5
Excellent information! This sheds a lot of light on the project and is likely the last piece I am missing. I am going to get that wired back in and go from there.
Do I need the RABS control module, or can I skip that?
Do I need the RABS control module, or can I skip that?
Thread Starter
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Trailering
Joined: May 2024
Posts: 22
Likes: 5
Got that all figured out and wiring sorted. Thanks to all that helped! The speedometer works and the odometer as well.
It runs through the gears and I can getup to highway speed which is great. One thing I noticed on the first drive was how it shifted with throttle position. At 100km/hr, it was revving at about 2000rpm. If I rolled on the throttle in anticipation of a hill, it would “upshift”. I am not super familiar with locking torque converter, but it seems like it is unlocking to go into overdrive when I roll the throttle on.
My question now, does this sound familiar to anybody? Is the computer smart enough to “learn” my habits? Is there a default reset procedure to do in such a case? Am I missing something else that I don’t know about the experts do?
Thanks!
It runs through the gears and I can getup to highway speed which is great. One thing I noticed on the first drive was how it shifted with throttle position. At 100km/hr, it was revving at about 2000rpm. If I rolled on the throttle in anticipation of a hill, it would “upshift”. I am not super familiar with locking torque converter, but it seems like it is unlocking to go into overdrive when I roll the throttle on.
My question now, does this sound familiar to anybody? Is the computer smart enough to “learn” my habits? Is there a default reset procedure to do in such a case? Am I missing something else that I don’t know about the experts do?
Thanks!
