Bronco Forum - Full Size Ford Bronco Forum banner
1 - 3 of 3 Posts

2 Posts
Discussion Starter · #1 ·
I hava a 90 bronco With manually locking hubs, yesterdey when i let go off the gas at about 44mp/h the transfer case starten making a grinding noise, and you can feel i in the gear shifter goes away ehen u get Down in speed, only when i have it in 4x4.
And I think it only happend after I have shifter to overdrive . Anybody got a clue on how I identify the problem?
Thanks in advance

Super Moderator
33,240 Posts
Yo Rattmuff,
Empty the 1356 fluid. Inspect for shavings etc.
Remove the fill plug from the rear transfer case (7A195). Fluid level should be just below the fill plug.

1356 Fluid Drain & Fill Plug Location pic; "...

The plugs are shiny metal. The right one is the fill plug and the left one is the drain plug..."
Source: by Jem270

1356 Oil pump may be the perp.

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 @

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

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.

To save you time and for better responses, please fill out your Bronco info with location, year, engine size, transmission type, transfer case type (manual or electric shift), locking hub type (automatic or manual) info & major mods such as a Lift, etc. .
Bronco info is now able to be put under your user name.
Click your profile button in the top right and go to account settings.

On that first page, named Account Details, scroll down to "Vehicle Info" and type in up to 100 characters.

Now you can simply enter your information in the text editor and click save.

Our Forum FAQs includes for example: How To Upload Images To Posts, How to Use Search and more tips!

➡See Baba Looey's Favorite FSB Links (lots and lots of tech links) ... includes such as, "Tailgate Window repair & troublehooting".

Try to find time to participate and vote in our current Full-Size of the Month Contest & later in the year, Full-Size of the Year Contest @ Voting
You will get ideas by those competing. Prizes are awarded to winners! A full spread in Bronco Driver Magazine is the top prize, in addition to a years subscription, once the article is submitted. Also, a years worth of premium FSB membership is awarded to the winner.


2 Posts
Discussion Starter · #3 ·
Wow Thats an amazing detailed answer, thanks(y) sorry if i posted in the wrong place Dident know, i acually think i found what happened. The gear selektor dont stop att the 4h , seems to go like an inch past if you drag it full back. (It stopps at 4h and then its another stop before you mode it left and back to get to n) hope i explaind it right.
Works witjout a grindibg noise if I diddnt pull it all thw way. Sorry if I wasted yor time
1 - 3 of 3 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.