Yo Tomasz,
Welcome to our DIY BIG Bronco site!
In 1990 351 Broncos were built withthe E4OD AutomaticTransmission, while the 302s still had the AOD automatic.
The AOD transmission can be identified by its 14-bolt oil pan. The pan is basically square, but the back two corners are tucked in a little tighter than the front corners, making the pan look six-sided. Many of the original pans also have "Automatic Overdrive" and "Metric" stamped into them. The metric is true only because the internal parts are metric, but the external mounting hardware to install the transmission is not. You can also check for a tag attached to the transmission itself. This is located on the driver's side on the bottom bolt that attaches the tailshaft to the transmission body. This tag will have a three-letter code on the top of the tag that will say PKA. The AOD has the neutral safety switch mounted above the valve body on the driver's side of the transmission and the speedometer drive cable is attached to the vehicle speed sensor on the driver's side as well. This transmission uses a throttle valve linkage or cable assembly to regulate the shifts.
Following from Bad Shoe Productions
The manual transmission is the ZF 5 speed.
For the engine harness, consider:
Wiring Harness for 1990 Ford Truck with 351w Engine
and
Another source for a new Bronco harness is Ron Francis.
Ron Francis Wiring
E mail Ron @
Ron Francis Wiring
They may be able to build you one.
"if you've ever wired a truck from scratch with nothing but spools of wire the Ron Francis stuff is a Godsend. You can actually stop in the middle of the job to get on with your life for a few days and then go back to wiring it and you will NOT have stroke. Try stopping in the middle of the job when you're doing it from scratch, I dare ya. I've installed two of the full kits and a couple/three partial circuit kits and don't have anything but praise for the product. I think the way each individual wire is labeled for it's entire length is probably the best part of the kit. When you're installing it and years afterwards there's
never any confusion about where the wire you're holding onto goes or what it's for. I admit they may not be the cheapest kit available but I think anyone who has one will agree it's money
well spent, and I know that when I installed my first kit they never hesitated once to put a tech on the 800-help line they have and the guy cleared up my problem in two or three sentences
and then gave me his extension & invited me to call him back if I was still unclear about it once I got back to the job. After getting a REAL close look at the wiring on my 88' while doing this tranny thing I'm starting to think I'll soon be in the market for my 3rd kit from them. Kind of a moot point since the wiring is a done deal, just tossing my $.02" by Bronco Bill78
Used harnesses are available from USA yard queens,
I just searched for
1990 >Ford > Bronco > Electrical > Body Wire Harness > Alternate Body Wire Harness
Used 1990 Ford Bronco Electrical Body Wire Harness Alternate Body Wire Harness with 33,000 miles start around $150.
For example, from Hollander @
Used 1990 Ford Bronco Electrical Body Wire Harness Alternate Body
Tri City Auto Parts, Inc.
Part Grade Unknown no pics
Mileage 117,000
$150.00
308-995-6153
Holdrege, NE
G & R American Auto Wrkg
see pics of a small harness @
Used 1990 Ford Bronco Electrical Body Wire Harness Alternate Body
Call For Price
Excellent Condition (Grade A) Mileage 33,000
800-452-0312
Independence, OR
Cambridge Auto Recycling
Excellent Condition (Grade A)
Call For Price no pics
2057 Church Creek Rd Cambridge, MD 21613
410-228-4034
& 1990 >Ford > Bronco > Electrical > Engine Wire Harness > Alternate Engine Wire Harness
Only one result:
G Mill Auto Parts
1915 North 2nd Street Millville, NJ 08332
Excellent Condition (Grade A)
Call for price no pics
856-293-0003
●
Here are the 1990 Bronco Pre-Delivery Shop, Emission and 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!
See my mostly recovered
View attachment 202203
site by member schwim @
Ford Bronco And F-150 Links - FORD BRONCO
For any Bronco issues or to chat about it's planned modifications or build, it's better to post each seperately in Noobie Bronco Tech Questions. Flame free zone. This will get more attention and you can build up your post count to get into other sections such as Bronco and Ford Parts/Accessories that requires 50 non-padded posts to participate due to scammers who preyed on our members.
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