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post #1 of 3 (permalink) Old 08-16-03, 05:13 PM
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confused 4 Wheel Drive out--now What?

I have a 97 Expedition, 4x4 5.4L The all wheel drive has never worked and 4 low sometimes since I bought it 5 years ago. Now only 2 high. When I flip the switch on the dash to A4WD the light under the tach just flashes on and off--"A4WD". Up to last week when I turned the switch one click further, the 4 High light would come on and go into 4 wheel drive, no problem. Now the A4WD still flashes but when I go to 4 High there is a clicking sound under the dash like a relay trying to switch for about 5 to 10 seconds then nothing, no light, no 4 wheel drive, nothing. It stays in 2H. I removed the switch on the dash and cleaned it. Still the same. What can the problem be or what can I do? (I have ordered a new switch.)

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post #2 of 3 (permalink) Old 08-17-03, 07:26 AM
Join Date: Feb 2001
Location: Bibra Lake Western Australia
Posts: 3,302
Re: 4 Wheel Drive out--now What?

I'm not familar with this vehicle (not sold by Ford in Australi) but it sound like your on the right track. I would be looking for a solenoid or relay at the other end of the wiring from that switch.

Regards Blue
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post #3 of 3 (permalink) Old 08-17-03, 09:55 AM
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Re: 4 Wheel Drive out--now What?

I've done all but take the entire dash out to locate the relay or solenoid. I can't follow the wires. The switch is not even carried by NAPA; had to order it from dealer. Is there a location to get a wiring diagram somewhere on the net? I think it is something simple, but is causing lots of stress!
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