Question about Cars & Trucks

1 Answer

2003 Ford Expedition does not shift into 4 wheel drive

2003 Expedition does not shift into 4 wheel drive in any switch position. Both 4x4 lights on dash use to flash 3 times every 2 minutes, but they no longer do. Checked fuses, I have 12v to 4x4 control module, but no output(12v) going to transfer case shift motor. I can apply 12v to motor and it will shift both ways. Checked resistance on all 4 position of selector switch, all OK per shop manual.

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    MVP:

    An expert that got 5 achievements.

    New Friend:

    An expert that has 1 follower.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Contributor
  • 24 Answers

Sounds like a relay to me.

Posted on Jan 01, 2014

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

  • 2 Answers

SOURCE: elec 4 wheel drive light comes on but 4x4 not engaging

change the 2 solenoids on the firewall on the passenger side. they contol the vacum to the acuator.

Posted on Feb 05, 2009

  • 336 Answers

SOURCE: 97 Silverado K1500 350 VTEC 5.7 Stuck in 4 Wheel Drive

If it has the push button 4wd selector on the dash, it is most likely the transfer case encoder motor. Not to bad to replace but you will have to remove the front driveshaft.

Posted on Aug 19, 2009

  • 29 Answers

SOURCE: 2005 Ford F150, 5.4L V8, 4x4; The transfer case

Encoder motor located on the transfer case is usually the problem. It is the motor that shifts the transfer case.

Posted on Sep 28, 2009

Testimonial: "Will look into this and report .Thanks so much"

alicantecoli
  • 22095 Answers

SOURCE: Ford Ranger 1995 4 wheel drive issue

no it should have 12v i would have thought,but to be truthful i dont have a lot of experiance with this american type of vehicle ,land rover with levers yes ,double diff in a 8 wheeler yes ,12 speed foden gearbox yes.Would need to get my dirty mits under the bonnet to to sort it out .Sorry i couldnt be of any more help with a quick bang here or a thump their us brits would rather have a ford transit van diesel .with manual box and power steering .Now that a real mans tool ,ideal for carrying stuff

Posted on Oct 18, 2009

  • 11031 Answers

SOURCE: I have a 99 GMC Jimmy with the 4 wheel drive. I

check fuse and relay to switch if power to switch retest switch new doesnt mean not defective if no power check connections and wiring for damage or breaks

Posted on Dec 02, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

Service advance light on won't go in four wheel drive


Bad connection, or frayed insulation short to frame or break in the wire. Bad switch? Does power side of switch actually have 12vdc?

Mar 12, 2015 | 2003 Ford Expedition

1 Answer

4x4 lights blink 2 times and goes out and car wont go in 4 x4 or 2 wheel drive


DOES THE CAR START AND RUN ARE THERE BLOWN FUSES MAYBE WHAT ABOUT THE 4X4 CONNECTOR IS IT CLEAN ARE THE LINES HOOKED UP TO THE ACTUATORS HERE'S SOME PHOTO'S OF WHAT IS INVOLVED THERES A ACTUATOR VALVE THAT I CAN'T GET A PHOTO
4x4-lights-blink-2-times-goes-out-car-5n4gqeiomjfecw0egpemrrys-2-0.jpg

Feb 20, 2015 | 2003 Ford Expedition

1 Answer

My truck is stuck in four wheel drive


At the risk of going to the offensive, sometimes it's the simplest thing - you ARE putting it in neutral, at a stop, engine running, with the brake pedal pressed, when trying to shift out of 4wd, yes?

2) Check for blown fuse for 4x4 shift module

3)This sounds dumm, but worked on my wife 99. I took it to a school parking lot, put it in reverse, floored it and pulled on the lever and it popped out of 4x4

4) The shift motor is bad. Replace it.

Hope this helps.

Feb 18, 2015 | 1999 Ford Expedition

1 Answer

2003 ford f250 superduty 4x4 don't work no indicator light on dash changed4x4 switch module what next?


Check for codes. Usually part stores do it for free. here is how it works.
Principles of Operation

Electronic Shift on the Fly (ESOF) System

The electronic shift on the fly (ESOF) system is an electronic shift system that allows the operator to choose between 2 different 4x4 modes as well as 2-wheel drive. The operator can switch between 2H and 4H mode at speeds up to 88 km/h (55 mph). To engage or disengage 4L, the 4x4 generic electronic module (GEM) requires that the vehicle speed be less than 5 km/h (3 mph), the brake pedal depressed and the transmission in NEUTRAL (or clutch pedal applied on manual transmission vehicles). This system contains pulse vacuum hublocks (PVH). The selector on the hublock, when turned fully counterclockwise to the AUTO position, engages/disengages the hub depending on the driver-selected 4x4 mode of operation. The hublocks also contain a manual override. When the selector is rotated fully clockwise to the LOCK position, the 4x4 vacuum and electronic system used for coupling the front axle to the wheel is bypassed.

The transfer case is equipped with a dual-cone synchronous clutch. This clutch is used to synchronize the front driveline to the rear. All other internals operate in the same manner as the manual shift system. When the mode select switch (MSS) on the instrument panel is turned, the 4x4 module powers the transfer case motor, which activates a shift fork and engages the clutch. When the shift motor reaches the desired position, as determined by the encoder position inputs to the 4x4 module, power to the shift motor is removed. When the transfer case front and rear output shafts are synchronized, the lockup collar mechanically engages the mainshaft hub to the drive sprocket. At this point, the front axle PVHs are engaged. Instrument cluster "4x4" and "Low Range" indicator operation is controlled via hardwired outputs from the 4x4 module.

Electronic Shift Transfer Case

The New Venture Gear NV 273 electronic shift transfer case is a 3-piece aluminium design. The unit transfers engine power from the transmission to the front and rear axles. Under normal driving conditions the unit is in 2-wheel drive high (2H), but when desired, the operator may shift into 4-wheel drive high (4H) or 4-wheel drive low (4L). The transfer case is shifted electronically. The unit is lubricated by a positive displacement fluid pump that channels fluid flow through holes in the mainshaft.

The encoder assembly used for mode indication is of a Hall-Effect type. The system uses a total of 4 independent transistors for mode recognition. Each transistor is associated with a specific range of motor movement. When the circuit to each transistor is closed, a ground path to any of the A, B, C or D encoder pins is accomplished. When the circuit to each transistor is open, the connection to any of the A, B, C, or D encoder pins is pulled to voltage. Mode indication is "decoded" by the 4x4 module based on the varying combinations of signals coming from the transistors.

Hublock Operation

With the hublocks in the Auto position, the 4x4 ESOP system uses timed vacuum sequences to lock and unlock the wheel ends when switching the instrument panel MSS between 2WD and 4x4 modes. A high vacuum level (222 mm or 8.75 in. Hg and greater) is applied to the hublocks to lock the internal spring mechanism that engages (locks) the hublocks for 4x4 mode, and a lower vacuum level (114 to 184 mm or 5.9 to 7.1 in. Hg) is applied to unlock the spring mechanism that disengages (unlocks) the hublocks for 2WD mode. The vacuum signals are supplied to the hublocks by system components, including the 4WD control module or GEM, wiring harness, solenoid, vacuum harness and vacuum seals. As a first step in service, eliminate obvious items such as loose wiring connections, loose vacuum connections or damaged vacuum lines.

Dec 12, 2014 | 2003 Ford F250

1 Answer

1998 F250 fuse box diagram


  • There is no fuse just for that light. If the 4 wheel drive light is not coming on you have an electrical problem such as a split wire or the switch itself of the shift actuator motor inside the transfer case is malfunctioning. If the hubs are not engaging into 4 wheel drive either let me know and I will post a diagnosis list for you.


  • Hope this helps.

Nov 17, 2011 | 1999 Ford Expedition

1 Answer

How do i shift into 4 wheel drive?


Shift to neutral then switch it to 4x4. It wont engage unless you do that.

Dec 24, 2010 | 1999 Ford Expedition

1 Answer

I have a 2003 4x4 super crew. It will not go into low or high and the light does not come on. There is no noises or grinding of any kind. Just will not go into 4 wheel drive.


the transfer case shift motor sometimes the contact plate is out of position as it can easily get off from its mounting.This is always the problem on 4x4 for ford cars.have your car diagnose using scanner

Feb 06, 2010 | 2003 Ford F150 Regular Cab

1 Answer

1998 Ford Expedition XLT 4 wheel drive switch is frozen in 4H


solenoid switch that engages the 4WD more likely will need replacing. fairly cheap to fix replace.

Oct 11, 2009 | 1998 Ford Expedition

1 Answer

How to shift into 4wd


Ford has 2 types of 4x4 system engagement. One is a knob on the dash that you just turn to 4wheel drive high or low. The other system is the 4x4 transfer case shift on the transmission tunnel (hump) between the driver and passenger seats. To shift into 4 wheel drive high while driving, just let off the gas and shift transfer case into 4H position, and continue driving. To shift into 4 wheel drive Low, stop the vehicle completely, put transmission in neutral, shift transfer case into 4Low position, put trans. in gear, and start driving. I am assuming before doing the above, you have locked in ( turned the front hubs to 4 wheel drive position.) Any further questions, let me know.

May 16, 2009 | 2003 Ford F150 Regular Cab

1 Answer

Stuck in 4 wheel drive high, Have the ability to go into 4x4 low, wont return to AWD. Dash shows that it is not in 4x4 but it acts like it is in 4x4 high. I have tryed shifting, Placing in neutral and...


I disconnected the electronic control on the transfer case and it seems to have unlocked the 4x4

At the back of the transfer case, near the top, there is a connector. I unplugged it and that seems to have disconnected the 4x4. My 2002 Explorer was stuck in 4x4, even though the 4x4 light was not on and I hit the Auto button a lot.

Dec 28, 2008 | 2003 Ford Expedition

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

186 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cars & Trucks Experts

yadayada
yadayada

Level 3 Expert

75005 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22095 Answers

Randy Ohler

Level 3 Expert

14585 Answers

Are you a Car and Truck Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...