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post #1 of 13 Old 01-19-2013, 07:17 AM Thread Starter
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control module testing

Working on an 03 f250 4x4 on the fly. When turning switch nothing happens. Shift motor is good, I can control it from the relays by grounding. I replaced the 4x4 control module with a used one with same numbers but didn't work. I'm thinking that module is also bad. Is there and way to test the module to be sure. any ideas ?
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post #2 of 13 Old 01-21-2013, 06:12 AM Thread Starter
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Is there anybody out there?
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post #3 of 13 Old 01-21-2013, 06:17 AM
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Re: control module testing

Are your vents blowing through defrost when you switch to 4x4? There is a ton of info about this in the drivetrain section.

Sent from my phone that somebody didn't help me get.

Unfortunately had to Sell my ......2004 KR CC SWB FX4 - Edge insight cts, blue spring upgrade, updated HFCM drain plug, XDP coolant filter, CAT EC-1 rated coolant, Custom Diesel EGR delete, CAT delete, Rotella T6

SEE MY OIL COOLER REPLACEMENT AND EGR DELETE - http://www.powerstroke.org/forum/gen...tml?highlight=
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post #4 of 13 Old 01-21-2013, 06:39 AM Thread Starter
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Haven't checked.
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post #5 of 13 Old 01-21-2013, 06:44 AM
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Re: control module testing

Quote:
Originally Posted by midnite View Post
Haven't checked.
If so, it is likely related to a vacuum leak, with esof. Could be bad hoses, or hub seals.

Sent from my phone that somebody didn't help me get.

Unfortunately had to Sell my ......2004 KR CC SWB FX4 - Edge insight cts, blue spring upgrade, updated HFCM drain plug, XDP coolant filter, CAT EC-1 rated coolant, Custom Diesel EGR delete, CAT delete, Rotella T6

SEE MY OIL COOLER REPLACEMENT AND EGR DELETE - http://www.powerstroke.org/forum/gen...tml?highlight=
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post #6 of 13 Old 01-21-2013, 06:51 AM Thread Starter
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Has manual hubs
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post #7 of 13 Old 01-21-2013, 07:03 AM
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Re: control module testing

Quote:
Originally Posted by midnite View Post
Has manual hubs
Your first post says 4x4 on the fly, are they after market hubs? Has it worked in the past?

Sent from my phone that somebody didn't help me get.

Unfortunately had to Sell my ......2004 KR CC SWB FX4 - Edge insight cts, blue spring upgrade, updated HFCM drain plug, XDP coolant filter, CAT EC-1 rated coolant, Custom Diesel EGR delete, CAT delete, Rotella T6

SEE MY OIL COOLER REPLACEMENT AND EGR DELETE - http://www.powerstroke.org/forum/gen...tml?highlight=
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post #8 of 13 Old 01-21-2013, 03:18 PM Thread Starter
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Yes hubs were switched. Has worked in the past.
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post #9 of 13 Old 01-21-2013, 03:39 PM
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Re: control module testing

Sorry, i'm not familiar with the module test. I've seen quite a few threads on the drivetrain section.

Sent from my phone that somebody didn't help me get.

Unfortunately had to Sell my ......2004 KR CC SWB FX4 - Edge insight cts, blue spring upgrade, updated HFCM drain plug, XDP coolant filter, CAT EC-1 rated coolant, Custom Diesel EGR delete, CAT delete, Rotella T6

SEE MY OIL COOLER REPLACEMENT AND EGR DELETE - http://www.powerstroke.org/forum/gen...tml?highlight=
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post #10 of 13 Old 01-21-2013, 05:21 PM
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does the 4x4 light up on the instrument cluster when you put it into 4 high?

-Matt

Ford Senior Master Tech

2015 F-250 XLT 6.7L

2006 F-250 6.0L SOLD
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