2001 Ford f150
#16
06-17-2015, 08:06 PM
kokill, read Bluegrass last post.. The solenoids have 12 v on them all the time. The other side of the solenoid is grounded at the shift motor on the transfer case. HE said to ground the solenoid terminal to the frame and see if it energizes. Then it should pass vacuum from the supply to the front axle You may have an electrical problem at the transfer case motor circuit board.
#17
06-17-2015, 11:23 PM
I am not guessing for you.
I gave you enough info to chase the issue.
You came to ask for help.
This the help available, same as a trouble shooting manual would give..
Do the testing as I have mentioned to see why the solenoid does not operate.
If you can't follow the help, you need to get some one who can.
At least look at the first pinned line on the page about trouble shooting 4x4 by a professional.
It will tell you the same things.
Good luck.
I gave you enough info to chase the issue.
You came to ask for help.
This the help available, same as a trouble shooting manual would give..
Do the testing as I have mentioned to see why the solenoid does not operate.
If you can't follow the help, you need to get some one who can.
At least look at the first pinned line on the page about trouble shooting 4x4 by a professional.
It will tell you the same things.
Good luck.
#18
06-18-2015, 12:25 PM
Bluegrass7 im sorry if I offended you you in any way it was not my intentions, I just am trying to get to the bottom of this so that way I can fix it instead of paying the dealer to do it. My SGT and I are gonna replace my lines going from the Solenoids to the front to see if that does anything, and test the Solenoids. I just don't have anything here to do it with seeing how I just got stationed here. I appreciate the info and help you have given. Once again I apologize if I upset you with my responses to your answers, not intended at all.
#19
06-18-2015, 01:33 PM
Not a problem here.
You kept coming back with indications you were not reading the replies to help.
I just had to get your attention so you can help yourself, not me.
I don't know your situation but understand what you point out.
You must do testing to pin point the fault area then decide on the repair.
Don't go replacing things on a hope and a guess before hand.
Doing it can introduce more issues, compound and confuse even more.
You would not want a doctor to replace your Toe hoping your thumb will work again!
Good luck.
You kept coming back with indications you were not reading the replies to help.
I just had to get your attention so you can help yourself, not me.
I don't know your situation but understand what you point out.
You must do testing to pin point the fault area then decide on the repair.
Don't go replacing things on a hope and a guess before hand.
Doing it can introduce more issues, compound and confuse even more.
You would not want a doctor to replace your Toe hoping your thumb will work again!
Good luck.
#20
06-18-2015, 06:01 PM
Ground the solenoids as bluegrass pointed out, to see if they can then pass vacuum. If the solenoid then transfers vacuum to the line you know the transfer case motor is not providing the ground. AND, you can also see if the lines transfer vacuum to the actuator (or not), and if the actuator diaphragm movers actuator (or not).
THEN you will know what needs to be fixed!
#22
10-17-2015, 09:03 AM
Cargo Master
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#23
01-01-2023, 10:55 AM
two things happen to get into 4 x 4.. An electric motor on the transfer case moves an arm to engage LO or HI gears, There is a vacuum cylinder on the front axle pumpkin that moves in and out and engages a lever inside the differential to lock in the axle shaft to the drive shaft. Your vacuum cylinder is not engaging. With motor running, pull off one of the two hoses on the cylinder and see if it has vacuum... then change to 4 x 4, pull off the other hose and see if it now has the vacuum....... if the vacuum is changing hoses, then your solenoids and electric all work OK... Normally what happens is the "lever and pin" get corroded and stick and don't change positions. Spray everything with a penetrant and tap on the arm with a 2 pound hammer.. you should be able to move it in and out. You might have to take off a sheetmetal guard... Don't beat it, just make sure it will move. Then connect the hoses and try again... If you have two guys, one can set in truck and put in- out of 4 x 4 and the other can tap on the arm trying to engage.
#24
01-02-2023, 06:43 AM
Lead Driver
The above info is correct, however
You are all guessing without a NGS and the diagnostic procedure
With a Ford book or info from AllData and a NGS
You go into active command mode and actuate the solenoids and read the pids
Then it's a 5 second deal to diagnose
4x4 lock is the fail safe in case of no vacuum
That is what you need to know
I know you have no access to a NGS righjt?
Start with a good visual inspection of all the vacuum lines and the underhood solenoids are most likely the fault
You are all guessing without a NGS and the diagnostic procedure
With a Ford book or info from AllData and a NGS
You go into active command mode and actuate the solenoids and read the pids
Then it's a 5 second deal to diagnose
4x4 lock is the fail safe in case of no vacuum
That is what you need to know
I know you have no access to a NGS righjt?
Start with a good visual inspection of all the vacuum lines and the underhood solenoids are most likely the fault
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