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2003 f350 6.0 NO 4X4

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  #1  
Old 01-16-2018, 08:33 PM
Ali Meredith
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Exclamation 2003 f350 6.0 NO 4X4

I have a 2003 f350 6.0 Powerstroke and have NO 4X4 I need help!
 
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Old 01-17-2018, 04:44 AM
53jimc
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Search YouTube for dieseltecron 4x4.
 
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Old 01-17-2018, 09:39 AM
Ali Meredith
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I have seen his videos my problem isn’t covered by him thank you though
 
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Old 01-17-2018, 10:10 AM
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Magic 8 Ball says Troll
 
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Old 01-17-2018, 10:15 AM
Ali Meredith
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Help would be appreciated, please donít troll
 
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Old 01-17-2018, 10:25 AM
Brotherbillstruck
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Originally Posted by Ali Meredith View Post
Help would be appreciated, please donít troll
My apologies. Since you have made several posts, and not once have described your problem in any detail whatsoever, how do you expect anyone with any knowledge to give a worthwhile response? I just assumed you were funning around. Any details to share?
 
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Old 01-17-2018, 10:36 AM
Ali Meredith
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You are right. I don’t have manual 4x4. I flip the switch and and nothing happens all of my relays are good and fuses are good. But it seems I have no power to my relay box under the hood on the driver side with the two identical relays for 4x4 I don’t know where to start.
 
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Old 01-17-2018, 10:56 AM
Brotherbillstruck
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O.k. Others will start to pick up on this who are more experienced than me. One suggestion I have is to check for a vacuum leak. This is simple the way I understand it. Turn the truck on and turn your heater to face with the blower up on high. Switch the 4x4 on. Wait 30 seconds. Does your hvac (heater) switch to Defrost all by itself? If it does this points to a vacuum leak. If Yahico sees this he will chime in with some troubleshooting on the electrical side of things. Other than that did you use the search function or check the tech folder at the top? Do you have 4x4 if you lock your hubs manually then turn the switch?
I see now that you do not have 4x4 manually. Sorry. Still try the heater.
 

Last edited by Brotherbillstruck; 01-17-2018 at 11:01 AM. Reason: Missed a detail in the op post
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Old 01-17-2018, 11:03 AM
Ali Meredith
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I do have a vacuum leak somewhere I already know that but if I lock the hubs manually then switch it into 4x4 nothing happens. The 4x4 light is not out I see it upon start up. I am not sure where to start first diagnosing this problem
 
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Old 01-17-2018, 11:14 AM
Brotherbillstruck
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Tech folder at the top. Scroll down to the ESOF discussion and troubleshooting. Discussion started with a 2003 model like yours. Hope it helps
 
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Old 01-17-2018, 11:32 AM
Ali Meredith
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I just checked it out but his problem was vacuum mine is that the transfer case isn’t going into 4x4 hi or low
 
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Old 01-17-2018, 12:00 PM
Brotherbillstruck
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Did you see all the fuses that were discussed to check? Also there was some discussion of the connection at the transfer case. Also on the second page were loads of elctrical diagrams Yahico provided. Post number 4 of that discussion has all kinds of electrcal/switch troubleshooting and not vacuum. I dont know how to easily point you to what I am seeing.
 
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Old 01-17-2018, 12:08 PM
Ali Meredith
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I may have looked st the wrong one I’ll check again
 
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Old 01-17-2018, 12:11 PM
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My 4x4 transfer case motor failed on mine. But the 4x4 light did illuminate when I turned the 4x4 dial no 4x4, at least didn't work consistently. Replaced motor and is fine now. But it sounds like you have determined that you have a vacuum leak... Not sure if the indicator light would come on if only a vacuum leak, but I'm no authority on this. Almost sounds electrical to me, but I could be wrong. Did you check all fuses? What makes you think it is a vacuum leak?
 
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Old 01-17-2018, 12:30 PM
Ali Meredith
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I think it is electrical I only need the vacuum to engage the hubs without having to manually do it. But I replaced my motor already and still no 4x4 it is something electrical
 
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