Question about 2000 Ford F250 Super Duty Crew Cabs

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2000 F250 Superduty, stuck in 4 high

It is a 7.3 powerstroke, with the electronic shift transfer case. Been shifting in and out of 4 high fine. And now it stuck, holding the brake hasn't worked. Any thoughts would greatly be apprecieated.

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Take the shift motor off of the transfer case and use a wrench to take it out of 4x4

Posted on Jun 05, 2009

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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

Ford f250 superduty 2008. Stuck in 4low. We can change it manaully. Motor good. Relays good. Everything good. but just wont switch over.


I can give you 2 more things to try. The turn knob is perhaps cracked on the backside of the knob. Knobs like this are similar to the heater control knob. When cracked, they spin around the shaft without turning it. You can sometimes get them to bite onto the shaft 1 way and slip when turned the other way. Pry off the knob and check.

Electronic shift solenoid type transfer units work off of 1 wire with variable voltage moving the shift solenoid to different lengths inside the transfer case. If the selector light on the shift switch burns out, it can throw off the shift solenoid from moving to the proper position. Removing the electric plug at the transfer case and placing a voltmeter on it, you would have a helper turn the transfer switch to its different positions and measure the electric values. They should progressively match each selector position.

Feb 12, 2014 | 2008 Ford F-250 Super Duty

1 Answer

My ford 150 is stuck in 4 low help


assume it is a electronic switch not a manual on the floor shift... check relay,, check the shift motor on side for transfer case last check switch on dash..

Oct 25, 2013 | 2000 Chevrolet Silverado 1500

1 Answer

Transfer case grinds truck only runs in 4wheel low nothing in 4wheel high or 2wheel drive


Manual or electronic t case?

Section 07-07: Transfer Case, 4x4 System, Service 1994 Bronco/Econoline/F-Series Workshop Manual
DESCRIPTION AND OPERATION Electronic Shift Operation The transfer case is equipped with a magnetic clutch, similar to an air conditioning compressor clutch, which is located inside the transfer case adjacent to the lockup collar. The clutch is used to spin up the front drive system from zero to vehicle speed in milliseconds. This spin-up allows the shift between 2-high and 4-high to be made at vehicle speeds listed in the vehicle owner's guide. The spin up engages the front lock hubs. When the transfer case rear and front output shafts reach synchronous speed, the spring-loaded lockup collar mechanically engages the mainshaft hub to the chain drive sprocket and the magnetic clutch is then deactivated. Shifts between 4-high and 4-low can only occur with the transmission safety switches closed. The vehicle's speed must also be within specified limits as determined by the transfer case speed sensor (3 mph or under). Electronic Shift Control System
This system consists of a two-switch control system, an electronic control module, an electric shift motor (7G360) with an integral shift position sensor, and a speed sensor. Switch Control System
There are two control switches located on the upper right corner of the instrument panel for fingertip shift control. The two switches are mounted horizontally and are identified as "4x4" and "LOW RANGE". Two indicator bar lamps are located in the instrument cluster.

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When either of the two switches on the instrument panel control are depressed, the first thing that happens is that the electronic control module receives input from the transfer case shift position sensor to verify what position the transfer case is in (2H, 4H or 4L). Next, the electronic control module looks at the speed sensor and the park/neutral position switch or clutch pedal position switch (depending on transmission type). If all conditions are correct to allow the desired shift, the electronic control module will tell the electric shift motor to execute the shift. After the shift has been made and the electric shift motor is off, the control module again looks at the shift position sensor to make sure the proper shift has been accomplished. Finally, the dash indicator light and the pushbutton light on the control panel will be illuminated by a signal from the electronic control module indicating the desired function has been completed.
Electronic Control Module
The electronic control module, located on the passenger side, controls the operation of the transfer case in response to inputs to the pushbutton control by the vehicle operator, the speed sensor, shift position sensor and the park/neutral position switch. Speed Sensor
The speed sensor, mounted on the rear of the transfer case , tells the electronic control module the speed of the vehicle to allow range shifts (in or out of 4L) to occur. Shift Position Sensor
The shift position sensor, an integral part of the electric shift motor , tells the electronic control module the shift position of the transfer case . Electric Shift Motor
The electric shift motor , mounted externally at the rear of the transfer case , drives a rotary helical cam which moves the 2W-4W shift fork and 4H-4L reduction shift fork to the selected vehicle drive position.

Nov 12, 2010 | 1994 Ford F250 Supercab

2 Answers

Manual Transmission seems to be stuck in low range. Transfer case in 2wd high range, however when transmission is shifted to 5th gear still only going 25 mph at 4000pm. Clutch seems to be engaging and...


The transfer case is stuck in the low range. If manual shift try shifting from low to high several times to see if free up. If electronic, check all fuses and make sure you hear transfer case change range. Do this by shifting with key on engine off. If no change refer to qualified transmission mechanic.

Dec 25, 2009 | 1990 Ford F250

1 Answer

I have f250 4x4 with auto .When shifting floor lever to 4 high only back tires pull. but if shifted to 4 low all 4 tires pull. whats wrong?


I had this problem and took apart the transfer case. what I found was the shift linkage going through the side of the transfer case ( just a hole in the aluminum) had worn so the shift mechanism ( a steel plate that looks like a hand with fingers squeezed together) was passing beside the linkage to engage 4 high but would hit 4 low. I put some spacers in to tighten up the linkage where it went through the wall of the case and took out the shift mechanism ( hand like piece of steel) and heated it with the torch and bent it slightly so it would catch the 4 high linkage. worked for me for another 250 000km. lots of off road use. good luck.

Oct 24, 2009 | 1988 Ford F 250

1 Answer

2002 f250 transfer case that doesnt shift into 4x4


Hello , chances are the 4x4 transfer motor/solenoid on the case either has no power , or has failed. I removed mine from my 2004 Explorer , dis-assembled and replaced the nylor washer and re-assembled and she works.

Jul 25, 2009 | 1997 Ford F250 SuperCab

1 Answer

I have a 2002 ford f 250 it will shift to 4 high but not to 4 low


I have a 2000 F250 occasionally i have this trouble to. It may sound simple but i have had to hold the brake for a while and turn the knob to low range while holding the brake. One time my transfer case was in a bind though and had to take the three bolts out and put a crescent wrench on the rod sticking out of the transfer case and shift it manually. Sounds a little excessive but i has worked for two years now. Until recently now it shift in to 4 high but won't come out it. Hopefully this helps.

Jan 15, 2009 | 2000 Ford F250 Super Duty Crew Cabs

3 Answers

Can,t get truck out of 4x4 low range


try putting your truck in neutral and then shifting into 2 wheel drive shift on the fly does not apply to 4 low only 4 high and on electric shift models it wont shift unless your ****** is in neutral.

Aug 26, 2008 | 1999 Ford F250 Regular Cab

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