4wd Not Working
Thread Starter
|
More Turbo
Joined: Mar 2016
Posts: 643
Likes: 6
4wd Not Working
4wd stopped working today. Manually locked hubs still no. If the vacuum line going to the 4x4 out of the reservoir doesn’t kick the pump on when separated and 4x4 is on with key on, does that mean bad switch?
Fleet Mechanic
Joined: Feb 2007
Posts: 1,652
Likes: 79
From: Mooresville, NC
Normally HIGH vac engages the hublocks, LOW vac disengages. Sounds either electrical or vac related --- wires, grounds, solenoids, etc..............
Also, WHILE STATIONARY the teeth can "lock up" --- try drifting it 2-5mph.............
Also, WHILE STATIONARY the teeth can "lock up" --- try drifting it 2-5mph.............
Senior User
Joined: May 2010
Posts: 158
Likes: 0
If you manually locked the hubs and you still don't have 4wd you most likely have a problem with the transfer case. Unless you have a hub that is completely broken.
The vacuum system only locks the hub, so if you did that manually it wouldn't matter if the vacuum system was working at all.
The vacuum system only locks the hub, so if you did that manually it wouldn't matter if the vacuum system was working at all.
Fleet Mechanic
Joined: Nov 2016
Posts: 1,343
Likes: 94
Trending Topics
Thread Starter
|
More Turbo
Joined: Mar 2016
Posts: 643
Likes: 6
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Fleet Owner
Joined: Apr 2012
Posts: 27,307
Likes: 549
From: Spanaway
Well I found out it takes about 55 Hrs to image a 6TB hard drive over a USB2 link.
Sh here are the files for diagnosing the 4WD in the 2006.
I added some extra files that should also come in handy for
other things in regards to the 4WD system and axle.
Let me know if you need any other info.
Sh here are the files for diagnosing the 4WD in the 2006.
I added some extra files that should also come in handy for
other things in regards to the 4WD system and axle.
Let me know if you need any other info.
Fleet Owner
Joined: Apr 2012
Posts: 27,307
Likes: 549
From: Spanaway
Don't just start throwing parts at it or it can and will get expensive.
Start at Pin Point test J3 on page 308-07A-41
That is in the first PDF in the group. You are going to need a DMM
to do the tests that don't require a scan tool.
That is the first place I would start looking.
Start at Pin Point test J3 on page 308-07A-41
That is in the first PDF in the group. You are going to need a DMM
to do the tests that don't require a scan tool.
That is the first place I would start looking.
Tuned
Joined: Oct 2015
Posts: 392
Likes: 86
From: Roebuck, SC
If no 4wd with manually locking the hubs, you have a mechanical problem.
You can take the lockers out without pulling the wheels. The seals may have allowed water to get in and they may need to be lubed up a bit.
DieseltechRon (rip) has some good videos on YouTube on the subject.
Good luck.
You can take the lockers out without pulling the wheels. The seals may have allowed water to get in and they may need to be lubed up a bit.
DieseltechRon (rip) has some good videos on YouTube on the subject.
Good luck.
Fleet Mechanic
Joined: Feb 2007
Posts: 1,652
Likes: 79
From: Mooresville, NC
In all likelihood you won't be happy with purchasing --- try finding someone with a FORD IDS / VCM or a Snap-On, the Pro Innova's aren't half bad either. I have the top of the line Autel and it's a little flaky in this area also (not recommended)
Fleet Mechanic
Joined: Nov 2016
Posts: 1,343
Likes: 94
There is a Forscan app, $5, get an OBD2 WiFi adapter $25. Use your Ipad or iPhone.
It will find most codes. My sons F350 was having issues, codes showed transfer case related problems. Worked thru them, all good now.
It will find most codes. My sons F350 was having issues, codes showed transfer case related problems. Worked thru them, all good now.