Testing Front Vacuum to 4x4?
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Senior User
Joined: Dec 2010
Posts: 179
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Testing Front Vacuum to 4x4?
hi all,
I 4x4 on the fly isn't working, I can lock in manually on my hubs, but want to be able to fix my in cab switch.
Anyone have any ideas of how to test and repair this?
thanks,
Brook
I 4x4 on the fly isn't working, I can lock in manually on my hubs, but want to be able to fix my in cab switch.
Anyone have any ideas of how to test and repair this?
thanks,
Brook
Lead Driver
Joined: Mar 2010
Posts: 5,505
Likes: 256
From: Woodbridge, Ontario, CA
If your 4x4 indicator illuminates and you can operate your 4x4 by manually locking the front hubs, your issue is caused by any one or more of the following: vacuum line(s), hub seal(s), PVH solenoid and/or circuitry or the vacuum pump itself.
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