Question about 1988 Ford Bronco

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AUTO 4X4 FORD BRONCO NOT SURE IF 4X4 IS INGAGING

YOU CAN HEAR THE MOTOR INGAGE BUT I WAS STUCK IN THE SNOW AND THE FRONT WHEELS DONT SPIN IT IS A PUSH BUTTON 4 HIGH 4 LOW BOTH DO THE SAME THING FRONT WHEELS DONT SPIN TRUCK WAS SITTING FOR ABOUT 2 YEARS SPRAYED THE TRANSFER CASE MOTOR WITH PENETRATING OIL BUT STILL THE SAME THING

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I'll bet you've also got auto locking hubs. If you do, replace them. If you don't, you might have a bad transfer case.

Posted on Dec 22, 2008

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I have a 2002 ford f150 5.4L 4 door my 4x4 wont work but I can hear my transfer case ingage but it dosent catch can it be my front UJ's?


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1 Answer

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


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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.
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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.
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I have found the most probable cause is the relays on the control board.
If you are technically adept --
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Clean the relay contacts and bend them a little to give them more 'wipe' to keep them clean longer.
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1 Answer

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