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Old 05-15-2001, 09:45 AM   #1
ort5
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Member#: 3706
Join Date: Jan 2001
Location: Jaffrey, NH
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2000 VW Golf TDI
5mt Red

Post AWD fuse in my Legacy Touring Wagon

Hey there,

This came up in the turbo powertrain section...but I wanted input from the Legacy guys. On my '94 Legacy Touring Wagon, there is a fuse labeled "4WD" or "AWD" I don't remember. Could I, in theory, pull that fuse and be in full time front wheel drive? If that is the case, then would I potentially have less drivetrain losses and better fuel economy (maybe even performance?). I love subaru AWD....but I hate awful gas mileage these days.

Thanks,
Dave
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Old 05-15-2001, 09:49 AM   #2
subarurabbit
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You should only put a fuse in there when you are using a spare tire.

You will still have drivetrain losses because the rear diff is still turning.

Roger
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Old 05-15-2001, 10:20 AM   #3
gavin
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Yup. And, actually, I think the whole rear assembly is still spinning, not just the diff.

I think all that fuse does is disables the center diff, which routes all the power to the front.
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Old 05-16-2001, 07:29 AM   #4
DLC
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I did try this once in mine...

Without a limited slip front, i had wheelspin all the time, even back then when the engine wasn't running more than stock boost and was slightly unhealthy.
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Old 05-18-2001, 11:11 AM   #5
ort5
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Despite the wheelspin, is there any potential for permanent damage? I just want to see what it is like.

Thanks,
DAve
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Old 05-18-2001, 12:13 PM   #6
gavin
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Hard to say, without knowing exactly what it does.

I believe, if you look in your Owners manual, the fuse is only provided to allow 2-wheel towing, and recommends still keeping it under 20-MPH, or some other very low speed, can't recall exactly. In any case, that would lead me to believe that it's not a normal operating state.
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Old 05-18-2001, 07:48 PM   #7
rrubel
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The fuse exists only on auto OB's and its specific purpose is to keep the AWD computer from being confused by the speed difference caused by a donut spare. The only speed limitation is the one imposed by the spare tire - 50 mph. You should *never* tow an auto AWD Subaru flat OR by one set of wheels - always use a rollback. 5-speeds can be towed flat in neutral. I've driven probably 100-150 miles or more with the fuse in because of a transmission problem I was having last year; no ill effects yet. And I did get wheelspin in the wet, but never on dry pavement.
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