Question about 1987 Ford Bronco II

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1987 ford bronco ii fuse/relay location for the 4 whl.drive touch button

The vehicle will not engage into 4 wheel drive,vehicle has been idle for about 8 yrs.

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 2 Answers

SOURCE: the 4 wheel drive doesn't work in my 89 Ford Bronco

The sound is not coming from the glove compartment, it is coming from the panel behind the drivers seat, that's where the relays and computer are located.
The relays click and apply power to a transfer case motor.
The motor attempts to turn a shaft that engages the front drive shaft.
When the computer thinks the shaft has NOT turned it tries again.
It will try three times then quit, figuring the shaft has not turned.

Get someone to crawl under the vehicle and engage the 4WD (just turn on the ignition- do not start the engine) See if they can hear the motor attempt to turn the shaft, it will make a clicking sound.
If not the connections or the motor may be bad.

I have found the most probable cause is the relays on the control board.
If you are technically adept --
you can remove the small side panel from behind the drivers seat and remove the control board. (remove the power plugs first)
Clean the relay contacts and bend them a little to give them more 'wipe' to keep them clean longer.
Put it back in and turn on the ignition.
Then push the RESET button on the side of the board.
Try the in / out 4WD a couple of times. If it doesn't work turn off the ignition, turn it back on and push the reset button again.

Posted on Oct 27, 2008

  • 1 Answer

SOURCE: 1987 ford bronco II Fuse Box Diagrams

will not go into overdrive

Posted on Sep 09, 2010

Audioaholic
  • 376 Answers

SOURCE: 1987 ford bronco ll won't go in to 4 wheel drive

could be a faulty switch or the lock out on the diff may be bad, In woudl start at the switch first and work my way down.

Posted on Dec 31, 2010

90Ranger
  • 38 Answers

SOURCE: 96 ford bronco 4 wheel

I know on some of the older Ford 4WD's the vehicle had to roll a little before the 4WD would lock in. And on some of the Ford 4WD's with the hub lockouts, someone had to roll the vehicle while someone else had to physically lock each hub by hand.

Posted on Jan 27, 2011

  • 335 Answers

SOURCE: Is there a fuse box under the hood on a 1987 ford

Tap on the shift motor on the transfer case see if that does anything, the motor may need to be replaced.

Posted on Feb 14, 2011

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1987 Bronco II. When four wheel drive is engaged. Front drivers side wheel makes a whining sound. Four wheel drive won't engage.


i would believe that u prob have a bad lock out, change it and u'll be good to go, take only couple minutes if you have the right allen wrench

Jan 16, 2011 | 1987 Ford Bronco II

1 Answer

1987 ford bronco ll won't go in to 4 wheel drive when i push the 4 wheel drive button


could be a faulty switch or the lock out on the diff may be bad, In woudl start at the switch first and work my way down.

Dec 31, 2010 | 1987 Ford Bronco II

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Bronco locked in 4 wheel drive. light on instrument panel stays on.


can't get the 4 wheel drive 2 engage when i push the buttom 2 engage it

Nov 11, 2010 | 1987 Ford Bronco II

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Where is fuel pump relay on 1988 Ford Bronco II


Fuse panel is located inside vehicle under dashboard on driver side. Fussible relays and links are located under the hood on the front of vehicle on drivers side.

Feb 21, 2010 | 1988 Ford Bronco II

1 Answer

4 wheel will not engage


Sounds like the transfer case motor need replaced.

Jan 30, 2010 | 1988 Ford Bronco II

1 Answer

I have a 1987 full size bronco (302) and I can't find one of the fuse compartments (boxes). I know there's one underneath the steering wheel but I can't find the other one. Thanks Dan


Power Distribution Box
Located under the hood, in the engine compartment. It houses the fuses and relays for most of the under hood components which are not controlled by a dash mounted switch (such as the alternator, fuel pump, ECM, etc.). The fuses and relays are replaced in the same manner as the fuse panel inside the vehicle. The power distribution box cover is hinged on one end and utilizes a retaining latch on the other. Simply release the latch and lift the cover up to gain access to the fuses and relays.

Oct 10, 2009 | 1987 Ford Bronco II

2 Answers

The 4 wheel drive doesn't work in my 89 Ford Bronco


The sound is not coming from the glove compartment, it is coming from the panel behind the drivers seat, that's where the relays and computer are located.
The relays click and apply power to a transfer case motor.
The motor attempts to turn a shaft that engages the front drive shaft.
When the computer thinks the shaft has NOT turned it tries again.
It will try three times then quit, figuring the shaft has not turned.

Get someone to crawl under the vehicle and engage the 4WD (just turn on the ignition- do not start the engine) See if they can hear the motor attempt to turn the shaft, it will make a clicking sound.
If not the connections or the motor may be bad.

I have found the most probable cause is the relays on the control board.
If you are technically adept --
you can remove the small side panel from behind the drivers seat and remove the control board. (remove the power plugs first)
Clean the relay contacts and bend them a little to give them more 'wipe' to keep them clean longer.
Put it back in and turn on the ignition.
Then push the RESET button on the side of the board.
Try the in / out 4WD a couple of times. If it doesn't work turn off the ignition, turn it back on and push the reset button again.

Oct 16, 2008 | 1989 Ford Bronco II

2 Answers

1988 Ford Bronco II 2.9 V6 5 sp. trans. Air power steering


Interesting problem... I myself own an 88 Ford Bronco II 4wd 2.9L V6. I have issues with my idle reving up to 1500 to 2000 rpms at stop. I have not yet resolved the issue, however, I do believe that sometimes electronic components are to blame...such as the brain or "Mother Board" of the vehicle. I replaced the "Brain" on two previously owned vehicles with instant results. I would suggest the local junkyard for a try...only as a last result. The "Brain" is located on the passenger side along the Interior wheel well. If you look along the front passenger side wheel well inside, beneath the plastic, vinyl, etc....you will find a metal enclosure that is comparable to a computers cd drive or hard drive........Approx. 4" x 6" give or take. The Board will have a wide slot plastic attachment plugged into it...very similar to an IDE slot on a computer.
This is the Brain......for your Bronco II.
Buying a used Brrain is a Gamble ...
You could get a bad brain!!!

BUT...You could get an instant repair!!
Who's to decide?
I had an 1986 BMW 325I
Suddenly One Day....
It started Reving up and down erratically....I was at a loss.

Luckily, I had a friend who was a BMW mechanic, and informed me that there was a relay in my glovebox that controlled my idle. I took a chance and tried replacing the relay with one I purchased at the junkyard...although they wanted $50 for it...I was willing.....and the new /USED idle conrol relay turned out to be an affordable fix. Thankfully

Jul 30, 2008 | 1988 Ford Bronco II

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