1999 - 2016 Super Duty 1999 to 2016 Ford F250, F350, F450 and F550 Super Duty with diesel V8 and gas V8 and V10 engines

Sponsored by:

4x4 trouble

Reply Subscribe

Search this Thread

Old

Apr 27, 2007 | 07:48 PM

#1

country2

Thread Starter

|

Senior User

Joined: Feb 2007

Posts: 218

Likes: 0

4x4 trouble

I have a 99 F-350 ESOF 4x4. When I switch to 4 high the light comes on but I can still spin the back tires (on dirt), when I shift to 4 low it cycles in and out but does engage. Vacume problem or something else?

Reply

Old

Apr 27, 2007 | 09:23 PM

#2

Beerstalker

Postmaster

Joined: Jan 2005

Posts: 4,743

Likes: 3

From: Peoria, IL

Most likely a vacuum problem, I think I remember someone saying that when shifting into 4 low it sends a longer or stronger vacuum pulse or something like that.

Reply

Old

Apr 27, 2007 | 09:27 PM

#3

country2

Thread Starter

|

Senior User

Joined: Feb 2007

Posts: 218

Likes: 0

That makes sense. Does any one know where the most likely places are for them to leak? I will start chasing it tomorrow.

Reply

Old

Apr 27, 2007 | 09:31 PM

#4

Beerstalker

Postmaster

Joined: Jan 2005

Posts: 4,743

Likes: 3

From: Peoria, IL

I believe a lot of the time the leak is a seal in the hub itself, but I'm not sure. There are a lot of threads on this subject in here if you do a search.

Reply

Old

Apr 27, 2007 | 11:12 PM

#5

bczolone

Elder User

Joined: Sep 2005

Posts: 911

Likes: 0

From: Mexifornia

Think beer is right, haven't had it yet...but a lot of seals at the hubs...check the lines first (behind the huds)

Reply

Old

May 6, 2007 | 08:23 PM

#6

country2

Thread Starter

|

Senior User

Joined: Feb 2007

Posts: 218

Likes: 0

Fixed 4x4 today it was the right hand vacume hose at the hub it was loose. cut off 1/2" and reinstalled and good to go.

THANKS

Reply

Reply Subscribe

Reply Share

First
Prev
1 / 1
Next
Last

All times are GMT -5. The time now is 03:05 AM.