2004 4x4 question
Thread Starter
|
Tuned
Joined: May 2012
Posts: 332
Likes: 42
2004 4x4 question
I have a 2004 with ESOF, are the axles supposed to stay engaged even when not in 4x4?
This past weekend I had to use 4x4 and the front axles wouldn't engage. I inspected the vacuum lines to the hubs one had a pin hole and both were soft, so I changed both of them. After changing the hoses the 4x4 worked.
The problem now is when I make a hard turn I hear a noise almost like something is binding or as if 4x4 is on. I greased the universals but noticed that they turn even with 4x4 off.
This past weekend I had to use 4x4 and the front axles wouldn't engage. I inspected the vacuum lines to the hubs one had a pin hole and both were soft, so I changed both of them. After changing the hoses the 4x4 worked.
The problem now is when I make a hard turn I hear a noise almost like something is binding or as if 4x4 is on. I greased the universals but noticed that they turn even with 4x4 off.
Laughing Gas
Joined: Mar 2012
Posts: 1,052
Likes: 28
From: Portal, AZ
I have a 2004 with ESOF, are the axles supposed to stay engaged even when not in 4x4?
This past weekend I had to use 4x4 and the front axles wouldn't engage. I inspected the vacuum lines to the hubs one had a pin hole and both were soft, so I changed both of them. After changing the hoses the 4x4 worked.
The problem now is when I make a hard turn I hear a noise almost like something is binding or as if 4x4 is on. I greased the universals but noticed that they turn even with 4x4 off.
This past weekend I had to use 4x4 and the front axles wouldn't engage. I inspected the vacuum lines to the hubs one had a pin hole and both were soft, so I changed both of them. After changing the hoses the 4x4 worked.
The problem now is when I make a hard turn I hear a noise almost like something is binding or as if 4x4 is on. I greased the universals but noticed that they turn even with 4x4 off.
Copied from bismics spread sheet:
First locate the vacuum pump on the passenger side fender well. make sure it works by listening with the key on should be vibrating. Next unplug the vacuum harness at the resevoir an cover with a finger to make sure it turns off. Install a vacuum pump into the hose (the pump should pull 25+ " of vacuum within seconds). If that is ok, then reconnect the pump line to resevoir inlet and vacuum pump to outlet to make sure the resivoir will hold vacuum. If thats good, follow lines to the "tee" were they split. You will see two lines ..... one goes to the front end and the other to the dash. Disconnect the lines and hook up the vacuum pump to each line, one at a time. Pump the gun to 20 " or so and monitor for 5 minutes to insure they do not drop vacuum. 90 percent of the time the problem is the line going to the front end. If the front end is causing the problem, then jack up the front end disconnect the vacuum lines to front knuckles. Pump to around 20" of vacuum while spinning tires to see if it drops vacuum. If either one does, then add 3-5 psi of air to the knuckle and spray with soapy water to find the leak. You can either fix the leak or cap off the line up top and run your hubs manually.
If the dash and the front end lines hold vacuum, then cap both lines off with a golf tee or equivlant.
Pump the line from resevoir to vacuum control solenoid to find the problem.
Also if the grey vacuum line that goes either to the hot water shut off in the heater hose or to the evaporator case is hanging loose,
it should only cause a problem in max a/c.
If the problem is in the dash just keep unhooking vacuum lines and plug one end and pump the other until you find the leak.
hope this helps
there are links in there too ill read them to see if they address your prob then post if they do.
Laughing Gas
Joined: Mar 2012
Posts: 1,052
Likes: 28
From: Portal, AZ
Welcome to guzzle's 4x4 Autolock Hub Lubrication Maintenance Web Page
a post said this should solve if leak is in the hub. Plus it just looks like good PM anyhow.
a post said this should solve if leak is in the hub. Plus it just looks like good PM anyhow.
Thread
Thread Starter
Forum
Replies
Last Post
High Binder
6.0L Power Stroke Diesel
8
Dec 7, 2013 08:59 PM
lifted77f250
1999 - 2003 7.3L Power Stroke Diesel
1
Feb 13, 2010 07:45 PM
