SD to MAF Conversion - E4OD vs AODE
Posting Guru
Joined: Jul 2004
Posts: 2,244
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From: Cottage Grove, WI
Its the same 4r70w, I didnt change transmissions, I used the 302 harness on the 351, the comp is OBD I, and I just unplugged the knock sensor.
Problems im having is random excessive cranking to start, or weak starts when warm.
Also transmission doesnt seem to be shifting when i think it should, and now ive noticed it slipping when it does shift. Never slipped at all before.
Problems im having is random excessive cranking to start, or weak starts when warm.
Also transmission doesnt seem to be shifting when i think it should, and now ive noticed it slipping when it does shift. Never slipped at all before.
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Senior User
Joined: Mar 2003
Posts: 322
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From: Hutto, Tx
It basically has the same problem it had before the computer swap.
Problem prior to harness and computer swap:
It idled this afternoon, but will intermittently dip down below 500 rpms then go back to about 850. When slowly giving it gas it is ok, until 2000 rpms. At 2000rpms it bounces between 1600 and 2000 rpms. It continuous the bounces from that point up as you give it more gas.
New Problems:
I tried to read the codes, but the code reader will not start beeping and I do not hear the sensors being tested when the key is turned to on. I could read codes before the swap. Also, the overdrive light is flashing on the shifter now (new problem like the code reader not working).
Problem prior to harness and computer swap:
It idled this afternoon, but will intermittently dip down below 500 rpms then go back to about 850. When slowly giving it gas it is ok, until 2000 rpms. At 2000rpms it bounces between 1600 and 2000 rpms. It continuous the bounces from that point up as you give it more gas.
New Problems:
I tried to read the codes, but the code reader will not start beeping and I do not hear the sensors being tested when the key is turned to on. I could read codes before the swap. Also, the overdrive light is flashing on the shifter now (new problem like the code reader not working).
Last edited by SmokeBlower; Jan 26, 2012 at 08:14 PM. Reason: typos
FTE Chapter Leader
Joined: May 2009
Posts: 8,843
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From: Eastern Ky
Ford Fuel Injection » EEC Program Codes Have a read here. Looks like the computer you have is AODE/4R70W only and not E4OD. But see what you think.
Correct me if I'm wrong....But aren't the AODE/4R70W's derivetives of the regular AOD, with electronics...?
And the E4OD is a electronic derivetive of the infamous c6?
Makes sense to me...Since that 4R70W's aren't offered for 460's, etc....Simply not strong enough....
Fleet Owner
Joined: Aug 2005
Posts: 23,667
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From: Easton,Ks
Some called the 4R70W a AODE(W). The "W" was for wide ratio.
FTE Chapter Leader
Joined: May 2009
Posts: 8,843
Likes: 27
From: Eastern Ky
What I'm not understanding, is that both the panther chassis cars, etc...Weigh close to what a truck does, and FoMoCo goes an changes EVERYTHING....
Most times, only difference is the body....Same 8.8" rearend, etc..
Fleet Owner
Joined: Aug 2005
Posts: 23,667
Likes: 301
From: Easton,Ks
AODE's were for passenger cars...Crown Vics, etc...IIRC...
What I'm not understanding, is that both the panther chassis cars, etc...Weigh close to what a truck does, and FoMoCo goes an changes EVERYTHING....
Most times, only difference is the body....Same 8.8" rearend, etc..
What I'm not understanding, is that both the panther chassis cars, etc...Weigh close to what a truck does, and FoMoCo goes an changes EVERYTHING....
Most times, only difference is the body....Same 8.8" rearend, etc..
If so it had to do with top speed and pulling power would be my guess and they did not want the output shaft to brake on the truck.
The E4OD is a much stronger transmission then the 4R70W and went into larger Trucks and Motorhomes with the larger engines. They keep changing parts inside the E4OD 1989 through 1996 to make it better. I think the last thing they changed in 1996 was the clutch disks and the programing of the computer to match the new clutch disks.
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FTE Chapter Leader
Joined: May 2009
Posts: 8,843
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From: Eastern Ky
Are asking why the different gear ratio and smaller diameter output shaft on the AODE then the 4R70W?
If so it had to do with top speed and pulling power would be my guess and they did not want the output shaft to brake on the truck.
The E4OD is a much stronger transmission then the 4R70W and went into larger Trucks and Motorhomes with the larger engines. They keep changing parts inside the E4OD 1989 through 1996 to make it better. I think the last thing they changed in 1996 was the clutch disks and the programing of the computer to match the new clutch disks.
If so it had to do with top speed and pulling power would be my guess and they did not want the output shaft to brake on the truck.
The E4OD is a much stronger transmission then the 4R70W and went into larger Trucks and Motorhomes with the larger engines. They keep changing parts inside the E4OD 1989 through 1996 to make it better. I think the last thing they changed in 1996 was the clutch disks and the programing of the computer to match the new clutch disks.
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Senior User
Joined: Mar 2003
Posts: 322
Likes: 0
From: Hutto, Tx
SIG RTN is working now. I ran KOEO and got the following codes:
552 - TAB Thermatic Air Bypass solenoid: circuit failure
211 - Profile Ignition Pick-Up (PIP) sensor - circuit failure
332 - Insufficient EGR flow detected
Could 211 and 332 be the cause of the chugging at idle and engine rpm chugging with throttle applied?
After getting the SIG RTN connected the truck would idle high for a minute, then idle low. When it tried to idle low it would ping and pop and back fire, almost die, then return to high idle for a minute. Then continue to repeat until I turned it off.
552 - TAB Thermatic Air Bypass solenoid: circuit failure
211 - Profile Ignition Pick-Up (PIP) sensor - circuit failure
332 - Insufficient EGR flow detected
Could 211 and 332 be the cause of the chugging at idle and engine rpm chugging with throttle applied?
After getting the SIG RTN connected the truck would idle high for a minute, then idle low. When it tried to idle low it would ping and pop and back fire, almost die, then return to high idle for a minute. Then continue to repeat until I turned it off.
