Question about 2004 Ford F150

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4 wheel drive tries to engage while in 2 wheel drive

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Posted on Jan 02, 2017

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Danniboi
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SOURCE: its try to engage 4 wheel when its in 2 wheel,

Transfer box sounds like its shot!

Posted on Jan 15, 2010

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SOURCE: our 2006 f150 4 wheel drive won't engage- dash

I had the same thing happen this weekend.Ij ust talked to my service man and he said if all the fuses are good it might be the switch on the dash.

Posted on Jan 26, 2010

sscullys
  • 984 Answers

SOURCE: 08 f150 4x4 on front

If I read this correctly ( which I might not have, bit early for me ), the front drive shaft will engage ( from the transfer case ) but the front wheels are not engaged ?

If so, sounds like either the vacuum from the IWE ( Integrated Wheel End ) is not being released, or the IWEs have had an issue with part vacuum ( damage vacuum lines ) and the IWE gear is rounded off.

If you pull the vacuum lines at the IWEs ( there are 2 lines, 1 is the vacuum line, the other is the vent tube that routes up into the engine compartment and is not attached to anything ), the front wheel should engage ( might need a 5 * turn to mesh the gears ). With the vacuum lines off, jack up the front axle ( take precautions, chock the rear wheels, parking brake, jack stands, etc ) see if the front wheels are engaged ( turning one wheel should turn the other ). The option is to do this after the truck has sat over night, and the vacuum has been released out of the vacuum reservoir.

If the wheels turn correctly ( engaged ) I would think the contact plates in the transfer case are not making contact. Good starting point for this is the connector on the side of the transfer case, some times this gets gummed up, and the pins do not make good contact. The contact plates in the transfer case are used for a few things, one of them is to signal the IWE solenoids to release vacuum to the IWEs.

Operationally vacuum holds the IWE ( Integrated Wheel Ends ) out, and once vacuum is removed the spring engages the IWE.

Here is a black diagram of the IWE vacuum system
sscullys_108.jpg

Posted on Feb 11, 2011

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1 Answer

I own a 2000 Nissan Frontier 4X4. I have not had occasion to use the 4 wheel drive. Can you tell me how to put the truck in 4 wheel drive and take it out? Do not have a manual. Thanks!


Assuming yours is the 2 gear stick layout this is roughly how it works.
ONLY CHANGE BETWEEN 2 AND 4 WHEEL DRIVE WHEN STOPPED, IN NEUTRAL AND WITH THE PARKING BRAKE ON!!
The smaller gear shift should be to the left of the normal gearstick.
It should be in the fully forward position. This means it is in 2 wheel drive, high ratio, for normal road driving. (Rear wheels).
Pulling the stick back ONE notch engages 4 wheel drive, high ratio. Used for snowy, icy, slippery conditions as well as light off roading. (Keep the speed under 50mph).
Pushing down and back another notch engages neutral in the transfer box. This means ALL drive is DISCONNECTED even if you use the normal gearbox.
**Try to avoid this one**!!
Pulling the stick back the last notch engages 4 wheel drive, LOW ratio. This is for the more extreme off roading conditions such as VERY steep hills. Not usually used in normal day to day driving.
The two fully forward positions, (2High and 4High), will be the ones used the most.

Jan 15, 2018 | Nissan Cars & Trucks

1 Answer

Is there an electric or vacuum switch on a 2001 chevy blazer


There are 2 models here the push button will flash if the system is not engaging or disengaging properly . If front drive shaft is turning. That is with car raised and supported . if front drive axles do not turn then the axle actuator is not engaging axle shaft passenger side. Remove actuator and manually engage shifting collar with a screwdriver still does not turn then inner axle is twisted.

Mar 21, 2014 | 2001 Jeep Grand Cherokee

1 Answer

2007 chevy trailblazer won't go into 4 wheel drive


Have you had codes checked ? While connected to a good scanner that will check transfer case switch to show if switch is working, and it could be the switch on the side of the transmission.

Feb 10, 2014 | Cars & Trucks

1 Answer

08 f150 4x4 on front end only one side is disengaging when in 2 wheel drive. The problem is when engaged into 4x4 wheel drive the front drive line spins and both sides engage but only the back wheels spin...


If I read this correctly ( which I might not have, bit early for me ), the front drive shaft will engage ( from the transfer case ) but the front wheels are not engaged ?

If so, sounds like either the vacuum from the IWE ( Integrated Wheel End ) is not being released, or the IWEs have had an issue with part vacuum ( damage vacuum lines ) and the IWE gear is rounded off.

If you pull the vacuum lines at the IWEs ( there are 2 lines, 1 is the vacuum line, the other is the vent tube that routes up into the engine compartment and is not attached to anything ), the front wheel should engage ( might need a 5 * turn to mesh the gears ). With the vacuum lines off, jack up the front axle ( take precautions, chock the rear wheels, parking brake, jack stands, etc ) see if the front wheels are engaged ( turning one wheel should turn the other ). The option is to do this after the truck has sat over night, and the vacuum has been released out of the vacuum reservoir.

If the wheels turn correctly ( engaged ) I would think the contact plates in the transfer case are not making contact. Good starting point for this is the connector on the side of the transfer case, some times this gets gummed up, and the pins do not make good contact. The contact plates in the transfer case are used for a few things, one of them is to signal the IWE solenoids to release vacuum to the IWEs.

Operationally vacuum holds the IWE ( Integrated Wheel Ends ) out, and once vacuum is removed the spring engages the IWE.

Here is a black diagram of the IWE vacuum system
sscullys_108.jpg

Feb 05, 2011 | 2004 Ford F150

1 Answer

Our 2006 f150 4 wheel drive won't engage- dash


I had the same thing happen this weekend.Ij ust talked to my service man and he said if all the fuses are good it might be the switch on the dash.

Jan 24, 2010 | 2006 Ford F-150

1 Answer

I cant get the leaver to engage from 2 whhel drive


hi,

try leaving the main gearshift in neutral and shut the car off , then try and move the lever to four wheel drive. or maybe try to switch it while slowly backing up. most likely since its hardly ever used it just might be stuck from non use. if neither of those ideas fix it. call the dodge dealership and ask to talk to a mechanic in the service department, they might be able to help, call them first before you take it in$$$..

jm

Nov 29, 2009 | 2005 Jeep Liberty

1 Answer

4 wheel drive won't engage


while in drive, engage the 4wd then shift into neutral for 2 or 3 seconds and shift back into drive. it works for my ram.

Jan 10, 2009 | 1992 Ford F250

1 Answer

07 Ford Traction Control


2 wheel drive refers to the rear wheels.
The traction control feature applies the brakes to the wheels that are spinning due to lack of traction so that they can slow down and get a grip or traction, if its in 2 wheel drive the system will pulse the brakes and you will hear and feel the system engage usually a buzzing vibration and an indicator light will come on the dash to tell you its engaged

Dec 28, 2008 | 2006 Ford Explorer

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