Locking differential questions (80Q)

[Kneale Brownson]

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The lockable rear diffs are supposed to unlock automatically above
something like 15 mph and relock when you return to speeds below that for
as long as the lock switch is engaged.  They're intended for things like
getting out of a parkinglot full of snow or a shallow ditch, etc.


At 06:19 AM 12/06/2001 -0800, Jim wrote:

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>I pushed the "Lock Diff" button on my "new to me" 1990 80Q the other day
>and nothing happened. OK, so it's broken I thought, no biggie. Shortly
>after I started noticing odd behavior in tight turns (it would kind of
>"wind up"). It took me a while (OK, so I'm a little slow!) to realize that
>it really was locked. Pushing the button again seemed to fix it. So a
>couple questions:
>
>1) After I pushed the button I drove the car on the highway. Isn't it
>supposed to unlock over 30MPH? Does it automatically lock again when you
>go below 30MPH?
>
>2) Is the switch a momentary connected to a controller or is it really an
>on/off switch?
>
>3) Is the diff. vaccum or electrically activated?
>
>4) I assume there is a light that's supposed to go on? How hard is it to
>fix the lights in that little panel next to the switch?
>
>Thanks in advance for any help!
>
>-jim
>
>
>
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