Ford Powerstroke 99-03 7.3L Discussion of 99-03 7.3 Liter Ford Powerstroke Turbo Diesels

4 wheel drive trouble.

Old Sep 6, 2010 | 09:11 PM
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Default 4 wheel drive trouble.

My 4 wheel drive has quit workin. Turn the switch an nothin at all with hubs in locked or unlocked. Any ideas
 
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Old Sep 6, 2010 | 09:17 PM
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CAn u hear the elcetric motor move?
 
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Old Sep 6, 2010 | 09:28 PM
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no i dont think so
 
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Old Sep 6, 2010 | 09:53 PM
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its either the motor is bad or a bad connetion
 
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Old Sep 6, 2010 | 10:31 PM
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that cause dash light an everything not to work?
 
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Old Sep 6, 2010 | 10:47 PM
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When you turn the 4x4 on with ac on does it start to come out the defrost vesnts? You either have a going bad vacuum pump or more than likely a leak somewhere on the vacuum lines.
 
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Old Sep 7, 2010 | 12:40 PM
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Check your fuses. Then crawl under the truck and unplug the switch at the T-case and fill the connection with Dielectric grease, plug it back in and try again.

Sounds like a blown fuse... Vacumn leak would NOT keep the T-case from engaging, just keep the 4x4 from locking up.
 
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Old Sep 23, 2010 | 02:11 AM
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I checked my connection, an only found one fuse for the 4 wheel drive and it was good. Am i missing a fuse or does anyone have any other suggestions? Thanks
 
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Old Oct 18, 2010 | 07:55 PM
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bump
 
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Old Oct 19, 2010 | 04:45 PM
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Originally Posted by CSIPSD
Check your fuses. Then crawl under the truck and unplug the switch at the T-case and fill the connection with Dielectric grease, plug it back in and try again.

Sounds like a blown fuse... Vacumn leak would NOT keep the T-case from engaging, just keep the 4x4 from locking up.
Originally Posted by svt28640
I checked my connection, an only found one fuse for the 4 wheel drive and it was good. Am i missing a fuse or does anyone have any other suggestions? Thanks
Did you do any trouble shooting at the connection? Is your vacuum pump working?
 
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