4r100 to e4od swap
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4r100 to e4od swap
Hey everyone, got a Ford Excursion 2001 5.4 gas with what appears to be a bad mechanical diode (known issue with the 4r100), essentially delay shifts all gears but specifically 1-2 wont go unless let off gas then harsh, flashing OD light when this occurs but code doesn't come up in database when tranny scanner hooked up and does disappear on its own while driving, pink fluid as well no large shavings found in it when changing filter and adding cooler...however if it is what I think it is it may not have much time left before complete failure. I have an e4od tranny sitting around from an older 2WD f350 gas, they look identifical except for the 4r100 has 3 sensors on the top, I think these are speed sensors....has anyone had luck swapping an older tranny into a newer truck like this?
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From: Media PA
Maybe @Mark Kovalsky could help shed some light on the 4R100 issue and the interchange compatibility.
But I think from past threads that the mechanical diode was already superseded by model year '01.
But I think from past threads that the mechanical diode was already superseded by model year '01.
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On a positive note my build date on the 4r100 is BD-2E29
This means it might have already been swapped before as the truck is 2001, since it was made in 2002 and the mechanical diode should be absent as that was in the 2000-2001 trannys, I may be dealing with solenoid/electrical issue or it could be the clutches, because the issue is intermittent and occuring at all temperates I may need to troubleshoot electrical first, all fuses are definitely good truck has 180,000 miles, besides the overdrive light code im not throwing any check engine codes
Frmr Ford Trans Engr
Joined: Aug 1999
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From: SE Florida
And this trans shouldn't have a mechanical diode. The mechanical diode was only in the diesel version of the trans, but over the years I have heard of two gas trucks that did have mechanical diodes. It is possible that this is number three, but it isn't likely.
If you change the transmission without knowing the codes there is a very good chance that the new trans will do exactly what the current trans is doing.
Tuned
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From: Burlington, Maine
Frmr Ford Trans Engr
Joined: Aug 1999
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From: SE Florida
I don't remember whose trucks they were.
When the mechanical diode debacle was discovered a couple thousand trucks had been built, but allegedly none had been shipped yet. We were told by the manufacturing people that all of the gas trucks had the transmission replaced and none were shipped with the mechanical diode. I have since learned that this was not 100% correct.
When the mechanical diode debacle was discovered a couple thousand trucks had been built, but allegedly none had been shipped yet. We were told by the manufacturing people that all of the gas trucks had the transmission replaced and none were shipped with the mechanical diode. I have since learned that this was not 100% correct.
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Tuned
Joined: Jun 2003
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From: Burlington, Maine
I don't remember whose trucks they were.
When the mechanical diode debacle was discovered a couple thousand trucks had been built, but allegedly none had been shipped yet. We were told by the manufacturing people that all of the gas trucks had the transmission replaced and none were shipped with the mechanical diode. I have since learned that this was not 100% correct.
When the mechanical diode debacle was discovered a couple thousand trucks had been built, but allegedly none had been shipped yet. We were told by the manufacturing people that all of the gas trucks had the transmission replaced and none were shipped with the mechanical diode. I have since learned that this was not 100% correct.
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Thank you for replies all, I am going to try forscan today try and get some exact codes, my tranny does have 181000 miles but when I got the truck fluid was pink some shaving on magnet (changed filter added aftermarket cooler bypass factory one) and trans always runs at normal temps as well just takes a while to warm up with new cooler, I wonder what a bad solenoid pack would cause? I figured it would throw a more specific code and cause complete loss of some gears but I could be wrong, one thing I noticed today is it always cant shift 1-2 at WOT until you let off gas to 3-4K rpm with or without the flashing OD light. Once the light is flashing that happens plus delayed hard 2-3 and 3 to over drive.
Frmr Ford Trans Engr
Joined: Aug 1999
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From: SE Florida
It might be the solenoids, or it might not.
There are two ways to fix this, One, you could throw parts at it until you get lucky and change the right one, or you run out of money. Two, you could get the specific codes and then we would know exactly where to look.
There are two ways to fix this, One, you could throw parts at it until you get lucky and change the right one, or you run out of money. Two, you could get the specific codes and then we would know exactly where to look.
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jberylecrider
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Aug 24, 2002 06:13 PM