Question about 1990 Ford F250

Open Question

90 f250 4x4 won't go into fourwheel drive

Transfer case won't go into four wheel drive

Posted by Anonymous on

Ad

3 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

Ad
  • 73 Answers

SOURCE: Four wheel drive computer clicks when i try to engage 4x4

tap on the 4wd motor on the transfer case while someone is pushing the button, if engages you need a new motor

Posted on Jul 01, 2009

Ad
sscullys
  • 984 Answers

SOURCE: 2002 ford f150 four wheel drive front hubs not

Is the system ESOF ( Electronic Shift On the Fly ) or MSOF ( Mechanical Shift On the Fly ) ?

If you have already tested to find the front drive shaft locks into place, and the front axle is the cause, looks to the front vacuum disconnect shift motor.
Item #10 in the parts diagram below :
sscullys_1.gif

Close up of it ( this is a picture from another person's bracket that broke ) :
sscullys_51.jpg

Chances are the vacuum lines to the vacuum disconnect motor are cracked, the vacuum solenoids are not working correctly, or the vacuum to the solenoids is having an issue ( the reservoir ) :
Vacuum diagram for the shift motor
sscullys_52.jpg

The pink line is vacuum for 2WD operation ( unlocks the axle ) the light blue vacuum line is for 4WD operation ( locks the axle ).

You can test right at the vacuum disconnect motor with a vacuum gauge with the motor running. Unplug the shift motor, and check for vacuum right at the motor.

Could be the shift motor has a damaged diaphragm and not holding vacuum or has water in it ( saw that 1 time ).

Start with checking for vacuum. Also check the fuses for the vacuum solenoids, the power is always at the solenoid, ground is switched on and off by the GEM ( Generic Electronics Module ) to operate them

Posted on Dec 18, 2010

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

4 wheel drive won't engage


Which do you have ?
Transfer Case - NVG 236 (Two Speed Automatic)
Transfer Case - NVG 233-NP1 (Two Speed Selectable)
The NV236 transfer case is an automatic transfer case with three drive ranges. Shifting from rear wheel drive to four wheel drive is done automatically when the transfer case shift control module receives wheel rotating slip information from the speed sensors. The transfer case shift control module then engages the transfer case motor/encoder to position the transfer case from rear to four wheel drive. When the transfer case shift control module receives information that the wheel rotation is the same on both axles, the transfer case shift control module sends position information to the motor/encoder to put the transfer case back into rear wheel drive. The three drive ranges are 2HI, 4HI, and 4LO. The 2HI position is for normal driving with the rear wheels pushing the vehicle. The 4HI, position is for driving through sand, snow, mud, gravel, or heavy rain at normal or slightly below normal speeds. The 4HI engages the front axle to allow for four wheel drive. The front axle is pulling the vehicle, and the rear axle is pushing the vehicle. The 4LO range is used for off road driving, heavy snow, deep mud, or shallow fording. The 4LO is similar to the 4HI except that the gearing in the transfer case is set for low speed and high torque. The NV236 is manufactured at Syracuse New York by New Venture Gear a division of New Process Gear for General Motors.
Is the switch light on or flashing ? If you have automatic 4x4 there are several DTC'S that can set >
DTC B2725 ATC Mode Switch Circuit Malfunction DTC C0300 Rear Speed Sensor Malfunction DTC C0305 Front Speed Sensor Malfunction DTC C0308 Motor A/B Circuit Low DTC C0309 Motor A/B Circuit High DTC C0310 Motor A/B Circuit Open DTC C0315 Motor Ground Circuit Open DTC C0323 T-Case Lock Circuit Low DTC C0324 T-Case Lock Circuit High DTC C0327 Encoder Circuit Malfunction DTC C0362 4LO Discrete Output Circuit High DTC C0367 Front Axle Control Circuit High DTC C0374 General System Malfunction DTC C0376 Front/Rear Shaft Speed Mismatch DTC C0387 Unable to Perform Shift DTC C0550 ECU Malfunction DTC C0611 VIN Information Error

Dec 01, 2015 | 2000 Chevrolet S-10

1 Answer

Put in low four wheel drive shifter won't go back to four wheel high


check your lever shifter alignment,and check also solenoid shifter,and check also transfer case alignment it might be transfer case bolt support.

Nov 03, 2014 | Cars & Trucks

1 Answer

I have a leak in the transfer case, just had the shop replace so seals in the engine and now they say transfer case is leaking shouldn't that have been checked then?


the engine and transfer case are to totally different monsters your transfer case controls the four wheel drive if your engine was leaking oil and they replaced some seals most likely they seen grease and oil on the transfer case and assumed it was leaking from the leaking engine that is directly above it even if you dont use the four wheel drive I would still sugest getting that fixed because the axles still turn inside there and you dont want those bearings drying up and going bad

Jan 25, 2013 | 2004 Hyundai Santa Fe

1 Answer

Fourwheel drive dont seem to engage on my 1997 jimmy


the four wheel drive is controlled by a electric actuator that is located on the transfere case

Dec 10, 2012 | 1998 GMC Jimmy

1 Answer

My 98 dodge ram won't go in to 4x4 where can I


i would start with the transfer case . check fluid level and also check your shift linkage to transfer case. also could have worn chain and gears. Is there any grinding noise when you try to shift into four wheel drive ?

Oct 23, 2012 | Cars & Trucks

2 Answers

How do u remove a transfer case


Most suvs have the transfer case linked to the transmission. Best is to take both out at the same time.Generally:
  1. Disconnect the battery
  2. Unplug all wires from the transmission - transfer case unit. Make sure you mark them so you can reconnect them properly
  3. Get inside the car and remove the shift lever(s)
  4. Remove the starter
  5. Remove the clutch slave if there's one or disconnect all cables from the unit
  6. Support the car on stands so you can work easily under it.
  7. Drain the oil from the unit may have 1 or 2 drain plugs
  8. Remove the shafts making sure you marked the alignment where they are joined
  9. Support both the engine and the transmission unit with the appropriate jacks
  10. Unbolt the transmission from the engine
  11. Remove the unit support (s)
  12. Remove the unit from the car.
Important to remember the type of oil that goes in the trans and in the transfer case. They may not be the same. Also, some electrical transfer cases don't use any oil.

Oct 19, 2011 | 2000 Oldsmobile Bravada

1 Answer

I have a used '95 Yukon that I just bought....It has the push buttons for Four Wheel drive........How do I tell if it is in one of the four-wheel modes?


the buttons to the right are the ones to put it in fourwheele drive the top is for four high and the botttom is for four low

Nov 23, 2010 | 1995 GMC Yukon

1 Answer

Transfer case removal


first remove both front and rear driveshafts. Then remove skid plate underneath transfer case. Remember to unplug the electric motor wiring harness for explorers with electronic four wheel drive switching. Remove vacuum line on the top of transfer case. Unbolt Speedometer cable mount from top/rear of transfer case. Remove five bolts connecting the transfer case to the transmission, this step will cause some transmission fluid to leak from the shaft housing (approx. half a litre) so place a drain pan underneath. Remember to either place a jack or wood blocking under transfer case before removing the last bolt connecting the transfer case as it is heavy (approx. 80-90 lbs.).

May 12, 2010 | Cars & Trucks

1 Answer

Four wheel drive computer clicks when i try to engage 4x4


tap on the 4wd motor on the transfer case while someone is pushing the button, if engages you need a new motor

Jun 30, 2009 | 1987 Ford Ranger

Not finding what you are looking for?
1990 Ford F250 Logo

Related Topics:

235 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts

yadayada
yadayada

Level 3 Expert

76846 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22246 Answers

fordexpert

Level 3 Expert

5546 Answers

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

Answer questions

Manuals & User Guides

Loading...