4x4 switch
Thread Starter
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Cargo Master
Joined: Aug 2004
Posts: 3,455
Likes: 8
From: Williams Lake B.C.
4x4 switch
2005 F-350 diesel
My 4x4 switch seems to be taking a long time to lock into 4x4?
I leave my hubs in the locked position because I know the vacuum part of things doesn't work.
On my 02 when I turn the switch on the dash it goes into 4x4 almost right away.
On this truck you have to put it in a long ways before you need , plus I had to back up and fool around to get 4x4 to work once yesterday?
Can the switch on the dash go bad or is there something on transfercase that could be wrong?
Im NOT looking for help fixing the vacuum part, its the manual switching thats not working?
My 4x4 switch seems to be taking a long time to lock into 4x4?
I leave my hubs in the locked position because I know the vacuum part of things doesn't work.
On my 02 when I turn the switch on the dash it goes into 4x4 almost right away.
On this truck you have to put it in a long ways before you need , plus I had to back up and fool around to get 4x4 to work once yesterday?
Can the switch on the dash go bad or is there something on transfercase that could be wrong?
Im NOT looking for help fixing the vacuum part, its the manual switching thats not working?
Thread Starter
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Cargo Master
Joined: Aug 2004
Posts: 3,455
Likes: 8
From: Williams Lake B.C.
I think I read somewhere about the A/C blend door being vacuum operated?
The AC doesn't blow out the vents now , but the 4x4 works decent.
Anyone know what the relation between the 2 are?
The AC doesn't blow out the vents now , but the 4x4 works decent.
Anyone know what the relation between the 2 are?
Fleet Mechanic
Joined: Nov 2003
Posts: 1,372
Likes: 14
From: West Cornwall, CT
For an 05 truck, once you turn the selector switch to 4WD a relay energizes to send power to the actuator motor mounted on the transfer case. Once the transfer case shifts into 4WD, the vacuum relay applies vacuum to the hubs.
The relay (2 of them) are located in a box between the driver's side battery and the fender. They are identical. One sends engagement power the transfer case motor and one is used to send disengagement power.
My guess is that either a relay is on its way out or the motor on the transfer case is rusted or sticking.
Lou Braun
The relay (2 of them) are located in a box between the driver's side battery and the fender. They are identical. One sends engagement power the transfer case motor and one is used to send disengagement power.
My guess is that either a relay is on its way out or the motor on the transfer case is rusted or sticking.
Lou Braun
Thread Starter
|
Cargo Master
Joined: Aug 2004
Posts: 3,455
Likes: 8
From: Williams Lake B.C.
For an 05 truck, once you turn the selector switch to 4WD a relay energizes to send power to the actuator motor mounted on the transfer case. Once the transfer case shifts into 4WD, the vacuum relay applies vacuum to the hubs.
The relay (2 of them) are located in a box between the driver's side battery and the fender. They are identical. One sends engagement power the transfer case motor and one is used to send disengagement power.
My guess is that either a relay is on its way out or the motor on the transfer case is rusted or sticking.
Lou Braun
The relay (2 of them) are located in a box between the driver's side battery and the fender. They are identical. One sends engagement power the transfer case motor and one is used to send disengagement power.
My guess is that either a relay is on its way out or the motor on the transfer case is rusted or sticking.
Lou Braun
What would the thing with vacuum lines and a electric plugin be that I changed?
It was on the passenger side inner fender.
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Fleet Mechanic
Joined: Nov 2003
Posts: 1,372
Likes: 14
From: West Cornwall, CT
That is a solenoid valve (I think that it is called a pulse hub solenoid). It energizes to send vacuum from the vacuum reservoir to both front hubs.
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Thread Starter
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Cargo Master
Joined: Aug 2004
Posts: 3,455
Likes: 8
From: Williams Lake B.C.
The 4x4 works now after a fashion...........................
Its the AC that doesn't blow out of the AC vents , and I remember reading somewhere the 4x4 vacuum and the blend door were related somehow?
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