2005 fx4 4wd not working
#1
04-18-2015, 11:21 PM
Join Date: Apr 2015
Posts: 9
Likes: 0
Received 0 Likes
on
0 Posts
2005 fx4 4wd not working
Ok, I realize this issue has been beaten to death but my 4x4 will not engage. No lights, no sounds, nothing. I have replace the fuses, relays, solenoid, all check valves, both actuators, the transfer case motor, and the switch. From the solenoid down the vacuum and actuators work fine. When I engage 4h the solenoid doesn't switch the suction to let the hubs engage. I am left to think its an electrical problem. Are there any inline fuses that I might have missed or maybe a PCM problem? Any other ideas?
One other thing is my ABS light is on. Any possible correlation?
I appreciate any help. Adam
One other thing is my ABS light is on. Any possible correlation?
I appreciate any help. Adam
#2
04-30-2015, 10:02 PM
Join Date: Apr 2015
Posts: 9
Likes: 0
Received 0 Likes
on
0 Posts
#4
04-30-2015, 11:10 PM
Join Date: Apr 2015
Posts: 9
Likes: 0
Received 0 Likes
on
0 Posts
#5
05-01-2015, 11:45 AM
Senior Member
Join Date: Dec 2012
Location: New Jersey
Posts: 567
Likes: 0
Received 0 Likes
on
0 Posts
#6
05-01-2015, 11:49 AM
Senior Member
Join Date: Dec 2012
Location: New Jersey
Posts: 567
Likes: 0
Received 0 Likes
on
0 Posts
When the system is working correctly, vacuum is placed on the system unlocking the hubs while the truck is running. When shifting to 4WD vacuum is relaesed, locking in the hubs. When the engine is started and running, vacuum is exerted on the entire system, unlocking the IWE actuators. When the engine is turned off or 4WD is engaged (either by floor shifter of dial selector) vacuum is released by the IWE solenoid to the actuators at the wheels. So vacuum to the actuators at the wheel unlocks the hubs for 2WD and release of vacuum by the solenoid locks them for 4WD.
When 4WD is disengaged, the solenoid is opened back up, the high vacuum from the reserve from the vacuum box is then used to then exert vacuum on the lines to the actuators unlocking the actuators no matter what the vacuum from the engine is.
When 4WD is disengaged, the solenoid is opened back up, the high vacuum from the reserve from the vacuum box is then used to then exert vacuum on the lines to the actuators unlocking the actuators no matter what the vacuum from the engine is.
#7
05-01-2015, 07:20 PM
Join Date: Apr 2015
Posts: 9
Likes: 0
Received 0 Likes
on
0 Posts
Trending Topics
#8
05-01-2015, 09:51 PM
Join Date: Apr 2015
Posts: 9
Likes: 0
Received 0 Likes
on
0 Posts
#9
09-17-2015, 07:23 PM
Join Date: Apr 2015
Posts: 9
Likes: 0
Received 0 Likes
on
0 Posts
#11
12-02-2015, 06:52 AM
Join Date: Apr 2015
Posts: 9
Likes: 0
Received 0 Likes
on
0 Posts
#12
12-14-2015, 11:47 AM
