4wd issues - Ford Powerstroke Diesel Forum
 
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post #1 of 3 Old 04-07-2012, 07:53 PM Thread Starter
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4wd issues

OK I just bought an 01 250 4x4 and I went to test the 4wd today and to my surprise it didn't work. Truck only has 70k on it. I was doing some reading and it sounds like the vacumn lines seem to be a pretty notorious problem with the auto selector which mine has. When I switch it into 4wd only the passanger side will spin. I haven't tried putting it in lock position yet because I have to take the wheels off because of the rim cap is blocking it. Does this sound like a typical vacumn leak or what? And where should I look for the leaks. Sorry I'm a newb
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post #2 of 3 Old 04-08-2012, 09:49 PM Thread Starter
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K I locked em in manually and they work. How would I go about diagnosing the vacumn leak
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post #3 of 3 Old 04-08-2012, 10:28 PM
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Pull the vacuum line off one side of your hub and plug it. Leave the other side in auto lock, then test in 4wd. If it works you know the o rings on the side you disconnected are bad. If not, reinstall that side and repeat on the other side. If still nothing, you have a leak else where.

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