need help with 4x4 please - Ford Powerstroke Diesel Forum
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post #1 of 12 Old 02-15-2014, 03:23 PM Thread Starter
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need help with 4x4 please

hey guys i have an issue.

my 4x4 wont engage.

new shift motor, new relays, and new switch on dash.

lights come on when starting truck.

i have manual front hubs so i know thats not the issue.

i checked the fuses they are good atleast the ones thats say deal with the ESOF in the owners manual

i can use a jumper wire and jump the relay in the box under the hood and the transfer case will shift and the llights will indicate what range it is in on the dash.


any ideas?

thanks in advance

Colin S. Age:22 Certified Diesel Tech, Infantry US ARMY
E99 7.3 6spd 4x4 6637, 4" straight pipe, 365,000 miles
"wear your high mileage as a badge of honor"

04 GMC 2500 4x4 Duramax/Allison
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post #2 of 12 Old 02-15-2014, 03:39 PM
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sounds like the relay? I would think, but mine is having a similar problem so...

early 04 f350 6.0 cclb lariat sr
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post #3 of 12 Old 02-15-2014, 03:54 PM Thread Starter
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but both relays are new....

Colin S. Age:22 Certified Diesel Tech, Infantry US ARMY
E99 7.3 6spd 4x4 6637, 4" straight pipe, 365,000 miles
"wear your high mileage as a badge of honor"

04 GMC 2500 4x4 Duramax/Allison
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post #4 of 12 Old 02-15-2014, 04:31 PM
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Had the same problem on mine a few years ago. Just needed to clean the electrical connector and add in some di-electric grease to the plug, and haven't had an issue since.
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2001 F350 Crew Cab Long Bed 4x4 6 speed

PHP Hydra, 4 inch MBRP Exhaust, GTP38R, FRx, DIY Exhaust Brake, T500 HPOP, Hutch/Harpoon,
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post #5 of 12 Old 02-15-2014, 04:48 PM Thread Starter
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which plug?

Colin S. Age:22 Certified Diesel Tech, Infantry US ARMY
E99 7.3 6spd 4x4 6637, 4" straight pipe, 365,000 miles
"wear your high mileage as a badge of honor"

04 GMC 2500 4x4 Duramax/Allison
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post #6 of 12 Old 02-15-2014, 09:44 PM
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the t-case shift module is behind the glove box, top right side. Check for chafed/ loose wires/ plugs. then check for voltage at the plug. I cant remember what pin it is but i think it is yellow with orange stripe, but not posative on that part.
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post #7 of 12 Old 02-16-2014, 03:43 AM Thread Starter
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Thank you. I'll check it out

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Colin S. Age:22 Certified Diesel Tech, Infantry US ARMY
E99 7.3 6spd 4x4 6637, 4" straight pipe, 365,000 miles
"wear your high mileage as a badge of honor"

04 GMC 2500 4x4 Duramax/Allison
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post #8 of 12 Old 02-16-2014, 05:21 AM
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4X4 NOT ENGAGING

One of you other posts has some answers
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2000 F250 Super Duty, 4x4, 7.3, 6 speed manual, 4" straight exhaust, 6637 air filter, superwinch hub locks, zoodad, foil delete, AIH delete, power pedal, autometer gauges, 2.5" leveling kit, 260,000
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post #9 of 12 Old 02-17-2014, 06:49 PM
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Quote:
Originally Posted by Colin7.3 View Post
which plug?
There are two under the truck on the transfer case. The one forward on the drivers side was the one I needed. It wasn't making a good enough connection.

Gene

2001 F350 Crew Cab Long Bed 4x4 6 speed

PHP Hydra, 4 inch MBRP Exhaust, GTP38R, FRx, DIY Exhaust Brake, T500 HPOP, Hutch/Harpoon,
6-liter Intercooler, 6637, DIY Coolant Filter, CCV Mod


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post #10 of 12 Old 01-04-2015, 10:27 AM
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How do you use a jumper wire to engage the 4x4?

2000 FORD F250 SUPERDUTY
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