ECU Program Codes & MAF E4OD Years Qs

Reply Subscribe

Thread Tools

Search this Thread

Apr 30, 2015 | 09:09 AM

Scndsin

Thread Starter

FTE Chapter Leader

Joined: May 2006

Posts: 12,338

Likes: 1,314

From: Central Mississippi

ECU Program Codes & MAF E4OD Years Qs

Its my understanding E4OD transmissions from 93-94 have the relay diode protection in the solenoid pack and in 95 Ford moved relay protection diodes from the Solenoid Pack to the PCM.

I had been under the impression that one of the differences between 94 to 95 E4ODs was pulse width modulation in the TCC, but understand that's not applicable here.

94-95 5.0 F series & Broncos with Vin N could have Mass Air & Auto.

The program codes listed on the former ford FI dot com shows program codes for those Mass Air/E4OD models show as:

HOG0
U4X0
VEX1
WAY1

And then there are the 5.8 E & F series + Bronco : BIO0 (No years listed)

As well as the unobtanium "ACKO" MAF ECU for 93-95 Lightning.

Who knows where the crossover year for ECUs & diode location is?

Are there any clearly ID'ed program codes that run solenoid/diode packs vs those that have it resident on the ECU?

May 5, 2015 | 10:52 AM

Scndsin

Thread Starter

FTE Chapter Leader

Joined: May 2006

Posts: 12,338

Likes: 1,314

From: Central Mississippi

1 week bump attempt...

May 5, 2015 | 11:28 AM

rla2005

Fleet Owner

Joined: Oct 2005

Posts: 20,786

Likes: 1,751

From: Kentucky

1995 was the transition to PCM based transmission solenoid protection diodes.

This group is for 1994 model year 5.0 PCMs w/external solenoid diodes:
<table class="MsoNormalTable" style="mso-cellspacing:.7pt;background:white;mso-yfti-tbllook:1184;mso-padding-alt: 1.5pt 1.5pt 1.5pt 1.5pt" border="1" cellpadding="0" cellspacing="1"> <tbody><tr style="mso-yfti-irow:0;mso-yfti-firstrow:yes"> <td style="padding:1.5pt 1.5pt 1.5pt 1.5pt"> BUG2
</td> <td style="padding:1.5pt 1.5pt 1.5pt 1.5pt"> 5.0
</td> <td style="padding:1.5pt 1.5pt 1.5pt 1.5pt"> Bronco, F-x50 E-x50
</td> <td style="padding:1.5pt 1.5pt 1.5pt 1.5pt"> MAF / 4R70W / F4TF-12A650-BBC
</td> </tr> <tr style="mso-yfti-irow:1"> <td style="padding:1.5pt 1.5pt 1.5pt 1.5pt"> HOG0
</td> <td style="padding:1.5pt 1.5pt 1.5pt 1.5pt"> 5.0
</td> <td style="padding:1.5pt 1.5pt 1.5pt 1.5pt"> Bronco, F-x50 E-x50
</td> <td style="padding:1.5pt 1.5pt 1.5pt 1.5pt"> MAF / E4OD / F4TF-12A650-AAA
</td> </tr> <tr style="mso-yfti-irow:2"> <td style="padding:1.5pt 1.5pt 1.5pt 1.5pt"> HUG0
</td> <td style="padding:1.5pt 1.5pt 1.5pt 1.5pt"> 5.0
</td> <td style="padding:1.5pt 1.5pt 1.5pt 1.5pt"> Bronco, F-x50 E-x50
</td> <td style="padding:1.5pt 1.5pt 1.5pt 1.5pt"> MAF / 4R70W / F4TF-12A650-APA
</td> </tr> <tr style="mso-yfti-irow:3;mso-yfti-lastrow:yes"> <td style="padding:1.5pt 1.5pt 1.5pt 1.5pt"> HUG2
</td> <td style="padding:1.5pt 1.5pt 1.5pt 1.5pt"> 5.0
</td> <td style="padding:1.5pt 1.5pt 1.5pt 1.5pt"> Bronco, F-x50 E-x50
</td> <td style="padding:1.5pt 1.5pt 1.5pt 1.5pt"> MAF / 4R70W / F4TF-12A650-APC
</td> </tr> </tbody></table>

These are 1995 model year 5.0 PCMs w/solenoid protection diodes:
<table class="MsoNormalTable" style="mso-cellspacing:.7pt;background:white;mso-yfti-tbllook:1184;mso-padding-alt: 1.5pt 1.5pt 1.5pt 1.5pt" border="1" cellpadding="0" cellspacing="1"> <tbody><tr style="mso-yfti-irow:0;mso-yfti-firstrow:yes"> <td style="padding:1.5pt 1.5pt 1.5pt 1.5pt"> VEX1
</td> <td style="padding:1.5pt 1.5pt 1.5pt 1.5pt"> 5.0
</td> <td style="padding:1.5pt 1.5pt 1.5pt 1.5pt"> Bronco, F-x50 E-x50
</td> <td style="padding:1.5pt 1.5pt 1.5pt 1.5pt"> MAF / E4OD / F5TF-12A650-HB
</td> </tr> <tr style="mso-yfti-irow:1;mso-yfti-lastrow:yes"> <td style="padding:1.5pt 1.5pt 1.5pt 1.5pt"> WAY1
</td> <td style="padding:1.5pt 1.5pt 1.5pt 1.5pt"> 5.0
</td> <td style="padding:1.5pt 1.5pt 1.5pt 1.5pt"> Bronco, F-x50 E-x50
</td> <td style="padding:1.5pt 1.5pt 1.5pt 1.5pt"> MAF / E4OD / F5TF-12A650-JB
</td> </tr> </tbody></table>

The BIO0 PCM is a 1995 model year 5.8L PCM that also has on-board solenoid diodes
<table class="MsoNormalTable" style="mso-cellspacing:.7pt;background:white;mso-yfti-tbllook:1184;mso-padding-alt: 1.5pt 1.5pt 1.5pt 1.5pt" border="1" cellpadding="0" cellspacing="1"> <tbody><tr style="mso-yfti-irow:0;mso-yfti-firstrow:yes;mso-yfti-lastrow:yes"> <td style="padding:1.5pt 1.5pt 1.5pt 1.5pt"> BIO0
</td> <td style="padding:1.5pt 1.5pt 1.5pt 1.5pt"> 5.8
</td> <td style="padding:1.5pt 1.5pt 1.5pt 1.5pt"> Bronco, F-x50 E-x50
</td> <td style="padding:1.5pt 1.5pt 1.5pt 1.5pt"> MAF / E4OD / F5TF-12A650-BYA
</td> </tr> </tbody></table> <!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves/> <w:TrackFormatting/> <w:PunctuationKerning/> <w:ValidateAgainstSchemas/> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w

oNotPromoteQF/> <w:LidThemeOther>EN-US</w:LidThemeOther> <w:LidThemeAsian>X-NONE</w:LidThemeAsian> <w:LidThemeComplexScript>X-NONE</w:LidThemeComplexScript> <w:Compatibility> <w:BreakWrappedTables/> <w:SnapToGridInCell/> <w:WrapTextWithPunct/> <w:UseAsianBreakRules/> <w

ontGrowAutofit/> <w:SplitPgBreakAndParaMark/> <w:EnableOpenTypeKerning/> <w

ontFlipMirrorIndents/> <w:OverrideTableStyleHps/> </w:Compatibility> <m:mathPr> <m:mathFont m:val="Cambria Math"/> <m:brkBin m:val="before"/> <m:brkBinSub m:val="--"/> <m:smallFrac m:val="off"/> <m:dispDef/> <m:lMargin m:val="0"/> <m:rMargin m:val="0"/> <m:defJc m:val="centerGroup"/> <m:wrapIndent m:val="1440"/> <m:intLim m:val="subSup"/> <m:naryLim m:val="undOvr"/> </m:mathPr></w:WordDocument> </xml><![endif]--><!--[if gte mso 10]> <style> /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority

9; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin-top:0in; mso-para-margin-right:0in; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0in; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} </style> <![endif]-->

May 5, 2015 | 04:13 PM

Scndsin

Thread Starter

FTE Chapter Leader

Joined: May 2006

Posts: 12,338

Likes: 1,314

From: Central Mississippi

Thanks. Looks like I have a choice of 1 for my 94.

HOG0 5.0 Bronco, F-x50 E-x50 MAF / E4OD / F4TF-12A650-AAA

Oct 25, 2015 | 04:57 PM

Scndsin

Thread Starter

FTE Chapter Leader

Joined: May 2006

Posts: 12,338

Likes: 1,314

From: Central Mississippi

We were at Pullapart yesterday & ran up on a near unicorn. 94 5.0 150 extra cab 4x4 with tranny code "E". Somebody had pulled the mass air sensor apart & the tube was on the ground. Computer was still in its home. Wooo-hooo

Pulled it out & it has a reman sticker with no Co. name.

Opened it up & it is decidedly different internally than my 94's.

Engraved across the main connector is "F4TF-AAB" which would match almost the H0G0 number with the basic part number deleted, followed by SMD 221.

There is a sticker on the Eprom that has a matching # on the factory label, EM8353

Wish I had gotten a pic of the data sticker & the calibration sticker may try later this week in order to do some searching.

Nov 15, 2015 | 09:38 PM

mattt181

Mountain Pass

Joined: Nov 2011

Posts: 232

Likes: 2

I've been looking into these MAF computers as well and there is one thing I've never found a definite answer on. Are all or any of the above referenced catch codes also SEFI as well as MAF? SEFI = Sequential EFI....like a Mustang 5.0 MAF computer is.

All of the earlier truck computers that are speed density program that I'm aware of are batch/bank fire, meaning it fires each side/bank at once.

So when Ford came up with the Mass Air EEC's for OBD1 trucks....did they go the whole way and also make them Sequential firing?

Nov 15, 2015 | 10:00 PM

Scndsin

Thread Starter

FTE Chapter Leader

Joined: May 2006

Posts: 12,338

Likes: 1,314

From: Central Mississippi

Speed density in our generation trucks are bank/batch fire and mass air in the same generation is sequential.

You can look at a wiring diagram in just about any manual & see the difference. There is always individual wiring to injectors in the presence of a Mass air meter in a V8 & half the common number of wires in speed density with no sensor.

10 Things Every Truck Owner NEEDS (2026 Edition)

Michael S. Palmer

Rezvani's Latest Post-Apocalytic Monster Is a Ford F-150 Raptor Underneath

Verdad Gallardo

Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

Joe Kucinski

2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

Brett Foote

Top 10 Ford Truck Tragedies

Joe Kucinski

AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

Brett Foote

Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

Michael S. Palmer

Ford's 2001 Explorer Sportsman Concept Looks For a New Home

Verdad Gallardo

10 Best Ford Truck Engines We Miss the Most!

Joe Kucinski

2026 Shelby F-150 Off-Road: Better Than a Raptor R?

Brett Foote

Nov 16, 2015 | 08:31 AM

Lead Head

Lead Driver

Joined: Jul 2007

Posts: 7,868

Likes: 9

From: Rhode Island

There's also another one missing there: HOG1, also used in F-150 5.0 MAF E4OD trucks.

Nov 16, 2015 | 10:03 AM

#10

Scndsin

Thread Starter

FTE Chapter Leader

Joined: May 2006

Posts: 12,338

Likes: 1,314

From: Central Mississippi

Quote:

Originally Posted by Scndsin

...Wish I had gotten a pic of the data sticker & the calibration sticker...

Anyway to cross reference the calibration to ID what the batch code should be?

Nov 16, 2015 | 10:05 AM

#11

Scndsin

Thread Starter

FTE Chapter Leader

Joined: May 2006

Posts: 12,338

Likes: 1,314

From: Central Mississippi

Quote:

Originally Posted by Scndsin

Engraved across the main connector is "F4TF-AAB" which would match almost the H0G0 number with the basic part number deleted, followed by SMD 221.

Nov 16, 2015 | 11:02 AM

#12

subford

Fleet Owner

Joined: Aug 2005

Posts: 23,667

Likes: 301

From: Easton,Ks

Here is the listings for the Calibration 4-54L-R00
F4TF-12A650-AAA Catch code HOG0.

Nov 16, 2015 | 12:08 PM

#13

mattt181

Mountain Pass

Joined: Nov 2011

Posts: 232

Likes: 2

Quote:

Originally Posted by Scndsin

Thanks for confirming that info. I figured Ford would have switched to sequential when they went to MAF configuration but Ford does some screwy stuff sometimes so it had to be asked. Screwy stuff like making Gen 1 Lightnings flat tappet cam with speed density, batch fire.

The reason I asked is I currently run Mustang 5.0 EFI in a 69 Bronco and in the future I may swap to a 4R70W trans. If/when that happens, I'm looking at using 1 of these Mass Air, 4R70W F150 EECs as long as it will accept a tune chip in the J3 because I'll undoubtedly need a tune to make this combo happy.
Thanks again.

Nov 16, 2015 | 01:58 PM

#14

Scndsin

Thread Starter

FTE Chapter Leader

Joined: May 2006

Posts: 12,338

Likes: 1,314

From: Central Mississippi

Quote:

Originally Posted by subford

Here is the listings for the Calibration 4-54L-R00
F4TF-12A650-AAA Catch code HOG0...

Thank you. At least I know what the ECU I have should be now.

If you should come across a F4TF-12A650-AAB I'd be interested in what its Catch code would be.

Nov 16, 2015 | 04:39 PM

#15

subford

Fleet Owner

Joined: Aug 2005

Posts: 23,667

Likes: 301

From: Easton,Ks

Quote:

Originally Posted by Scndsin

If you should come across a F4TF-12A650-AAB I'd be interested in what its Catch code would be.

Catch code MUT1.

Reply Share

First
Prev
1 / 2
Next
Last

Forum Jump

ECU Program Codes & MAF E4OD Years Qs

ECU Program Codes & MAF E4OD Years Qs

Trending Topics

10 Things Every Truck Owner NEEDS (2026 Edition)

Rezvani's Latest Post-Apocalytic Monster Is a Ford F-150 Raptor Underneath

Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

Top 10 Ford Truck Tragedies

AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

Ford's 2001 Explorer Sportsman Concept Looks For a New Home

10 Best Ford Truck Engines We Miss the Most!

2026 Shelby F-150 Off-Road: Better Than a Raptor R?