93 E350 Tranny Problem
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93 E350 Tranny Problem
Howdy,
I just got the tranny, e4od, replaced with a used one and it appears to have an issue with the solenoid pack or the associated wiring.
When in drive, the vehicle does not pull like it should, appears to start off in high gear.
When in R,1,2 - pulls just like it should.
I checked the power wire at the solenoid connector while in D and was getting a solid 12V.
I checked the voltage between the power wire and solenoid wires at the connector and was getting 8V on one and about 12 at the other.
There is NOT enough room to get to the pins on the tranny itself, so i'm inquiring to find the best way to check the solenoids.
is there a way to manually ground the solenoids to verify if the problem is in the tranny?
what is the best route to proceed?
Thanks for the input.
Joe
I just got the tranny, e4od, replaced with a used one and it appears to have an issue with the solenoid pack or the associated wiring.
When in drive, the vehicle does not pull like it should, appears to start off in high gear.
When in R,1,2 - pulls just like it should.
I checked the power wire at the solenoid connector while in D and was getting a solid 12V.
I checked the voltage between the power wire and solenoid wires at the connector and was getting 8V on one and about 12 at the other.
There is NOT enough room to get to the pins on the tranny itself, so i'm inquiring to find the best way to check the solenoids.
is there a way to manually ground the solenoids to verify if the problem is in the tranny?
what is the best route to proceed?
Thanks for the input.
Joe
Frmr Ford Trans Engr
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From: SE Florida
Fleet Owner
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In addition to Mark's advice use back probing pins like these:
They'll help access wires in tight places like transmission connectors etc etc.
HTH
They'll help access wires in tight places like transmission connectors etc etc.
HTH
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Codes
I checked the codes with key on not running and it was 621 and 626.
I tried to get codes with it running and it revved up but it wouldn't blink.
i checked the codes again not running and got 622 and 629. i checked again and got 621,622,626, and 629.
every time i check it i get a different amount of codes, but they are the from same 4 codes above consistently. (i hope that makes sense)
Is there any way to find out what year the tranny came from?
I was reading how in 95 they moved the diodes from the solenoid pack to the computer and i'm thinking this might be my issue.
I'm thinking the next step would be to put the solenoids from the old tranny into the new one?
I see you are quite the e4od tranny guru mark, so i'm hoping u can point me in the right direction.
Thanks
Joe
I tried to get codes with it running and it revved up but it wouldn't blink.
i checked the codes again not running and got 622 and 629. i checked again and got 621,622,626, and 629.
every time i check it i get a different amount of codes, but they are the from same 4 codes above consistently. (i hope that makes sense)
Is there any way to find out what year the tranny came from?
I was reading how in 95 they moved the diodes from the solenoid pack to the computer and i'm thinking this might be my issue.
I'm thinking the next step would be to put the solenoids from the old tranny into the new one?
I see you are quite the e4od tranny guru mark, so i'm hoping u can point me in the right direction.
Thanks
Joe
Frmr Ford Trans Engr
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From: SE Florida
Those are all electrical fault codes. They are for all four solenoids. I would start by looking (electrically) for a problem with the harness. All four electrical circuit codes are not a coincidence.
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What year was the used replacement e4od? Last year i replaced my 93 with a 95 and had to use the solenoid pack out of the 93 in the 95 i rebuilt. Don't quote me but i think they changed in 94 or 95, also i remember something about the plugs being different colors on the solenoid packs, white to grey or something like that.
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I'm not sure what year it came out of. I've been trying to figure out how to identify it.
Near the mlps switch, it has F0TP, Which from what i can find means the tranny came from a 90 model?
on the tail section, it starts with RF-E9TP - haven't found any info yet on what this might mean.
Can anyone verify this?
I found an intermediate connector under the dog house so i plan to test the harness for continuity and shorts and check the resistance of the solenoids.
Does anyone have a good wiring diagram from the solenoid pack connector to the PCM?
Thanks for all the help.
Near the mlps switch, it has F0TP, Which from what i can find means the tranny came from a 90 model?
on the tail section, it starts with RF-E9TP - haven't found any info yet on what this might mean.
Can anyone verify this?
I found an intermediate connector under the dog house so i plan to test the harness for continuity and shorts and check the resistance of the solenoids.
Does anyone have a good wiring diagram from the solenoid pack connector to the PCM?
Thanks for all the help.
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12 pin solenoid pack
I am pretty sure I found the root of my issue, just need advice if it can be resolved without pulling the solenoid pack.
I checked for continuity from the power wire through the solenoids at the connector under the dog house and was getting zilch.
I probed some other pins just for the heck of it and was getting 40ohms through the black/orange wire (supposed to be clutch coast solenoid) and the purple/orange and orange/yellow wires (supposed to be solenoids 2 and 1 respectively).
I used a mirror to look at the connector on the solenoid pack and it has 12 pins instead of 9 like the harness.
I don't know enough about the e4od and changes it went through over the years to know if i can just re-wire the connector so the wires go the correct pins, or if i'm going to have to switch the solenoid pack.
Please advise!!!!!
Last edited by bondeson343; Jul 25, 2020 at 12:19 AM. Reason: forgot picture
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I just looked at the solenoid pack i took out of the 95 i rebuilt for my 93 i has a grey plug like the one you have pictured, i am pretty sure you have to change the solenoid pack, I don't think your ecu/ecm has the ability to control the pwm solenoid pack even if you rewire it.
1995 and up vehicles used either PWM or on-off TCC solenoid. To identify which you have look at the internal plastic solenoid cover: Black color is on-off and grey color is PWM. (All diesels are PWM after 1995 and most gas are on-off however some gas engine vehicles are also PWM thru 2001.)
Look at the bright side you should have the upgraded center support and a better pump!
Aslo google e40d astg update handbook for more info
https://www.trucktransdiag.com/downl...-tech-info.pdf
1995 and up vehicles used either PWM or on-off TCC solenoid. To identify which you have look at the internal plastic solenoid cover: Black color is on-off and grey color is PWM. (All diesels are PWM after 1995 and most gas are on-off however some gas engine vehicles are also PWM thru 2001.)
Look at the bright side you should have the upgraded center support and a better pump!
Aslo google e40d astg update handbook for more info
https://www.trucktransdiag.com/downl...-tech-info.pdf
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1995 and up vehicles used either PWM or on-off TCC solenoid. To identify which you have look at the internal plastic solenoid cover: Black color is on-off and grey color is PWM. (All diesels are PWM after 1995 and most gas are on-off however some gas engine vehicles are also PWM thru 2001.)
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Is a direct quote from the pdf tech article in the link.maybe its wrong
https://www.trucktransdiag.com/downl...-tech-info.pdf
Frmr Ford Trans Engr
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It's wrong. Late 1999 was the start of the PWM solenoid.
There was a change in 1995, though. There are diodes in the circuit to protect the PCM. In 1995 they moved. I never get it right which way they moved, but there is a compatibility issue if you get them mixed up. But all of the torque converter lock solenoids were on/off until late 1999.
There was a change in 1995, though. There are diodes in the circuit to protect the PCM. In 1995 they moved. I never get it right which way they moved, but there is a compatibility issue if you get them mixed up. But all of the torque converter lock solenoids were on/off until late 1999.
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Mark,
the guy who swapped my tranny for me verified that the previous solenoid pack only had 9 pins.
since i'm getting funny readings, I'm convinced the current solenoid pack either has a different internal wiring configuration or has an internal issue.
I'm curious what your thoughts are on this?
Thanks
Joe
the guy who swapped my tranny for me verified that the previous solenoid pack only had 9 pins.
since i'm getting funny readings, I'm convinced the current solenoid pack either has a different internal wiring configuration or has an internal issue.
I'm curious what your thoughts are on this?
Thanks
Joe
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