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6.0L Power Stroke Diesel 2003 - 2007 F250, F350 pickup and F350+ Cab Chassis, 2003 - 2005 Excursion and 2003 - 2009 van

4wd auto locking function. Twilight zone?

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Old Dec 4, 2014 | 07:52 PM
  #46  
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From: Houston, TX
Originally Posted by BLADE35
Hey Dom you might want to consider getting a priest out to get that truck a cleansing and a blessing to get out four-wheel-drive working
At the rate it's going Benny, I'm gonna need the pope here. I'm still trying to keep the faith. Lol

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Old Dec 4, 2014 | 09:11 PM
  #47  
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I think before an excorsism, why not some troubleshooting?
1. If you plug the hose to the be axles, does the pump stop after a while?
2. if you plug the hose at the pump does it stop?
3. Try the above with and without the HVAC set to off? What results do you get.

2 tells you if you need a pump, 1 tells you if you need a 4*4 switch to turn the vacuum?
If doing 1 oor 2 as 3 with HVAC in Off, then this tells you have leaks under the dash or the valve line to the he temperature control on the heater line, trace as appropriate.
 
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Old Dec 4, 2014 | 09:47 PM
  #48  
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From: Spanaway
I think I have posted this set somewhere before but maybe it's will help.

Manual A/C



EACT system





If you need it I have a photo of the control valve somewhere and I can
post that if you need me to. If you can find and isolate line #14 where it
comes off the reservoir then I would start there. Just plug the HVAC control
side and see if the 4X4 works. You might also want to "T" in a vacuum gauge
so watch what the vacuum is doing and how long it will hold.

Sean
 
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Old Dec 4, 2014 | 11:11 PM
  #49  
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Found the photos.
This is looking at the structures with dash and stereo removed.
The stereo sits right in front of the unit and not under the glove box.
This is a 2006 with the EACT system.




That Blue box top left is the steering wheel control
adaptor for my stereo.




Sean
 
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Old Dec 5, 2014 | 09:38 PM
  #50  
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From: Houston, TX
Originally Posted by Yahiko
Found the photos. This is looking at the structures with dash and stereo removed. The stereo sits right in front of the unit and not under the glove box. This is a 2006 with the EACT system. That Blue box top left is the steering wheel control adaptor for my stereo. Sean
The blend door actuator I got is not the one where the 6 lines plug into. Definitely different. It looks like it's mounted closer to the shaft in the back. I think.

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Old Dec 5, 2014 | 09:39 PM
  #51  
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From: Houston, TX
Originally Posted by mhoefer
I think before an excorsism, why not some troubleshooting? 1. If you plug the hose to the be axles, does the pump stop after a while? 2. if you plug the hose at the pump does it stop? 3. Try the above with and without the HVAC set to off? What results do you get. 2 tells you if you need a pump, 1 tells you if you need a 4*4 switch to turn the vacuum? If doing 1 oor 2 as 3 with HVAC in Off, then this tells you have leaks under the dash or the valve line to the he temperature control on the heater line, trace as appropriate.
I replaced the solenoid and the vacuum pump already. Thanks. I still need more testing. Lol

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Old Dec 9, 2014 | 11:35 PM
  #52  
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just replaced the blend door actuator tonight. it's behind the passenger side glove box and on top of the hvac boxes.
 
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