1990 incorrect ecm??

[Devinjus]

1990 5.8 full size bought a few years ago previous owner swapped everything to fix chugging/hesitation/4x4 inop/random codes and shutting off
Found ecm has several areas fryed
Looking up old ecm keeps popping as a 5.0
Banging my head against a wall trying to make sure i get correct replacement

 

[Tiha]

Yep sure does come up at a 5.0 ECM.

Are you sure you have a 5.8?

It may have made a mistake, or maybe someone way smarter than me believed it would work ok.

Probably better find a different ECM.
Or do an engine swap LOL

 

[miesk5]

Yo Devinjus,
Welcome!

The firing order for 5.0 87-93 Broncos is 1-5-4-2-6-3-7-8. If #7 and #8, or #2 and #4 spark plug wires are routed next to each other at the separation bracket, an induction crossfire condition can occur. Distributor rotation: Counterclockwise
----------

Vehicle Identification Number (VIN)​

A 17-digit combination of numbers and letters forms the vehicle identification number (VIN). The VIN is stamped on a metal tab that is riveted to the instrument panel close to the windshield. The VIN is viewable by looking through the front windshield on the driver's side. The VIN is also found on the certification label.

By looking at the 17-digit VIN, a variety of information about the vehicle can be determined.

• The first three digits identify the manufacturer and the vehicle make and type.
• The fourth digit determines the gross vehicle weight rating (GVWR class) and brake system for Ford-completed trucks and MPV's. For buses and incomplete vehicles, the fourth digit determines the brake system (only).
• Digits five, six and seven identify the model or line, series, chassis, and cab or body type.
• The eighth digit points out the particular engine found in the vehicle.
• Digit nine is the VIN check digit.
• The tenth digit identifies the model year of a Ford-completed vehicle, or the model year of the incomplete vehicle, if sold by Ford as an incomplete vehicle.
• The eleventh digit determines the assembly plant.
• Digits 12 through 17 make up the sequence serial and warranty number. Digit 12 uses the letter A until the production or sequence of 99,999 units (digits 13 through 17) is reached. Letter A then becomes B for the next production sequence of vehicles.

I couldn't find the EEC IV part numbers on your label (& some catch codes) by smileybry @ https://www.fullsizebronco.com/threads/fsb-ecu-part-number-the-definitive-list.64368/
---------
5.0 vs. 5.8 (EFI) Identification @ http://web.archive.org/web/20070710...m/forum/vbarticles.php?do=article&articleid=7
●
Here are the 1990 Bronco Pre-Delivery Shop & Electrical & Vacuum Troubleshooting Manuals (EVTM), Partial by member Kingfish999 in Google Drive @ 1990 Ford Truck service manuals - Google Drive
&
1990 Ford Truck Emissions Manual.pdf by Ford via member 90.CaliBronco in Google Drive @ 1990 Ford Truck Emissions Manual.pdf

Suggest you download both for faster scrolling and to use the table of contents index.

1990 Ford Bronco Brochure by Ford via Dezo's Garage @ https://www.xr793.com/wp-content/uploads/2020/07/1990-Ford-Bronco.pdf

Haynes Red Manual for 80-95 Bronco & F Series @ Hanes guide 80-96 bko f series.pdf found by BroncMom!

 

[Devinjus]

Yep sure does come up at a 5.0 ECM.

Are you sure you have a 5.8?

It may have made a mistake, or maybe someone way smarter than me believed it would work ok.

Probably better find a different ECM.
Or do an engine swap LOL

Block and electronics are 5.8. Previous owners replaced engine because of these issues and still ran poor after. I might just have to do some junk yard surfing to see if i can find correct

 

[miesk5]

Block and electronics are 5.8. Previous owners replaced engine because of these issues and still ran poor after. I might just have to do some junk yard surfing to see if i can find correct

Yo D,
For a YARD SEARCH on-line, I use;
Hollander Quality Replacement Parts | Find Used Auto Parts | Online Locator
A yard that uses Hollander Interchange can search other yards and have it shipped including some Canadian yards.
"...For over eighty years, Hollander has been making the best tool for fast, interchangeable part matches. The new Edition Hollander Interchange contains more interchangeable options than ever before.
The Hollander Interchange provides auto recyclers and auto collectors, rebuilders, and others with the easiest and most comprehensive solution for identifying interchangeable auto parts..." See their yard Directory @ Seller Directory | Used Auto Parts | Hollanderparts
Can select a certain part, such as;

1990 >Ford > Bronco > Electrical > Engine Ecm > Fitment​

 

[Devinjus]

Miesk5 ill take a look at them

I called ford and got a part number but im comming up blank in my research
e6dz12a696a

 

[Skitter302]

1990 5.8 full size...
Found ecm has several areas fryed
....

Got photos of the inside?

 

[Devinjus]

Got photos of the inside?

Got photos of the inside?

 

[miesk5]

Yo Devinjus,
With my poor vision, I can see Capacitor leaking, corrosion, etc

Also, C9Z is shown to be for 5.0 with AOD in