ford ranger 4x4 not working

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May 30, 2007 | 08:32 PM

roywells

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ford ranger 4x4 not working

our 2000 Ranger won't engage the 4x4when we try to switch it . The lights on the dash flash but it will not engage the 4 wheel drive

May 30, 2007 | 08:50 PM

fflintstone

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From: Aurora

Welcome to FTE roywells, good choice to get pointed in the right direction.

You may have the pulse vaccuum hubs, but they may have discontinued them by 2000, I'm not sure. Someone will be by soon enough to confirm this. Once engaged, it stop flashing and stays on. If you don't have pulse hubs, then the hubs are permanently engaged and engagement for the 4X4 happens in the transfer case. The 4X4 high switch will flash until it senses that it's engaged. There's a shift motor connected to the transfer case that you can check out. Check and clean the wiring leading to it.

Fred

May 30, 2007 | 09:17 PM

Rockledge

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From: Connecticut

The Pulse Vacuum Hublock system was discontinued in mid-year 2000. Those '98-'00 Rangers/Mazda B-Series that are equipped with PVH have black plastic front hub covers with small screens in the center.

https://www.ford-trucks.com/forums/s...68&postcount=6

See also: https://www.ford-trucks.com/forums/5...ont-go-in.html

May 31, 2007 | 06:20 PM

roywells

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Thanks for the info. Can anyone elaborate a little more for me?

May 31, 2007 | 07:32 PM

fflintstone

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From: Aurora

Quote:

Originally Posted by roywells

Thanks for the info. Can anyone elaborate a little more for me?

The pulse vaccum hubs use vaccum from your engine to engage the hubs into 4WD. Ford discontinued them for a good reason. They're a PITA. The engineer that designed them is probably flippin' burgers for a livin'. Life shoiuld be that fair, he's probably running the department. To find out if yours has them, you'll have to pull a wheel. Have you gone through the links that Rockledge posted? There's some nifty diagrams that you can compare to your setup.
Check https://www.ford-trucks.com/lc/lc.ph...iagnostics.pdf
You've got some diagnosing to do. Assuming of course that you do have the PVH. There's hords of threads pertaining to them. Try a search at the beginning of the forum.

Rockledge: Cute, I've actually never been quoted before. Especially since it was me quoting you. lol. https://www.ford-trucks.com/forums/s...68&postcount=6
Fred

Last edited by fflintstone; May 31, 2007 at 07:34 PM. Reason: wrong link

Jun 12, 2007 | 03:30 PM

4LO 4.0

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From: grovetown ga

if you find that you have the pvh system this might help.https://www.ford-trucks.com/article/...cuum_Hubs.html

Jun 12, 2007 | 07:10 PM

wendell borror

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You can do away with the pulse vacume hubs once and for all with a set of AVM manual hubs from Tellico 4x4. They sell for 105.00 bucks. AVM are the only ones that make manual hubs for the pulse vacume system.