Question about 1985 Dodge Pickup 4WD

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Pulled into 4 wheel drive lost all electrical power

Engine quit and had no lights. Played with 4 wheel lever and could get the motor started but still had no lights and when I stepped on the brakes the motor quit. Finally let it run some but still couldn't get bright lights. Mechanic checked alternator and voltage regulator. Said it was charging at a low rate but new alternater changed nothing.

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Well it turned out to be something simple. It was caused by a bad grounding battery cable.

Posted on Mar 30, 2009

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Start engin why abs and 4 wheel lights on and abs goes off and pull 4 wheel drive lever to get it off

the 4wd defeats/changes the ABS , just as the operators guide tells you.
i don't understand this post at all, my guess is you have the ABS warning stuck on, all the time. (forget 4wd)
right and dont know why, ?

  1. The brakes are bad. get a brake job or inspect them all.
  2. that includes all parts for damage and conditions, (ask or get it dont by any brake man... lots to do there.
  3. The ABS system is failing , scan it. SCAN THE ABS NOW.
  4. There is air in the system. and worse. up stream of ABS modulator
  5. and more per the FSM. no books?

here is the manual, read the brake pages, carefully and ask questions.

Aug 12, 2014 | 2010 Jeep Patriot Sport

1 Answer

Why abs and 4wheel lights come on when i start

read the operators guide yet,
seems not.

Aug 12, 2014 | 2010 Jeep Patriot Sport

1 Answer

1995 Ford Explorer 4 wheel drive trouble, front wheel drive doesn't work

Something you can do is to tap the 4/4 motor under drivers side on the back of transfer case with key on engine off. Have someone work the buttons as you gently tap the motor. Don't hit so hard as to dent it. Usually works.

Feb 22, 2013 | 1995 Ford Explorer 4.0

1 Answer

I have a 2002 ford f150 xlt fx4 4.6l engine. 2 door reg cab. i have a 4 wheel drive shift lever. the 4 wheel will only engage on rare occasion and only after pulling into 4 low then to 2 high then back...

For the 2002 MY ( this is in the 2006 Section, just want to call it out to others that might find the solution, this does not apply to the 2006 MY )

Operationally vacuum shifts the front axle between 2WD and 4WD mode. The GEM ( Generic Electronics Module ) applies ground to the solenoid needed for the mode selected on the switch ( for ESOF ) or when the transfer case shift lever is moved ( MSOF ).The contact plates in the transfer case signal the GEM that the transfer case is engaged, and the Vacuum solenoids need to be activated ( either 2WD to 4WD or 4WD to 2WD ).

Lift and support the front of the truck so the front wheels are off the ground ( take safety precautions, chock wheels, jack stands, etc )
Key on, engage 4x4 and try to turn the front drive shaft.
- If it turns it is a problem with the transfer case.
- If it doesn't it is a front axle engagement problem.

- If the front drive shaft does not turn :
•With the truck running ( with front wheel back on the ground ), switch from 2WD to 4WD and back again, the vacuum shift motor should move the lever on the front axle.
{ picture of shift motor }
-- If the vacuum shift motor does not move:
1.Check for vacuum on the lines while shifting between modes. Pink vacuum line is 2WD mode, Light Blue vacuum line is 4WD.
2.Check the fuses for the 4WD system and the solenoids.
3.Check the vacuum lines from the vacuum shift motor to the solenoids on the firewall.
4.Check the vacuum lines from the solenoids to the vacuum reservoir box behind the battery.
5.Check the vacuum reservoir box for cracks.
6.Typical solution is the vacuum lines ( to the solenoids or to the vacuum shift motor ) are cracked or the vacuum shift motor has a cracked diaphragm and has water in it.
7.Could be the shift plate contacts in the transfer case are corroded / not making good contact, and not activating the solenoids.

- If the front drive shaft turns:
For MSOF systems
-- Check that the shift linkage on the transfer case is moving when the lever is moved from 2W to 4H and 4L.

I am going to take a SWAG that it is 1 of 2 places, both cases the front drive shaft is locking into place.

1. The front vacuum shift motor is not moving ( vacuum or vacuum line issue ).
2. The contact plates for the shift motor are not making contact and are not signalling the GEM that the transfer case state has been changed.

I'd start with the front axle off the ground test, and see which way to go, before you start repalcing items.

Mar 27, 2011 | 2006 Ford F-150

1 Answer

While driving my 1993 Jeep Grand Cherokee today it slipped into Neutral on the Left Hand Shifter which has 2 settings: 4 wheel all the time (Quadratrac), (Neutral), and of course 4 wheel low... I checked...

I think I'd check the condition of the motor mounts.

A broken mount will allow the engine / transmission assembly to try and move around the rotational center line of the engine.

If, as I suspect, this 4 wheel drive selector is controlled by a cable, the movement could pull the cable and thereby move the position of the shift lever.

If memory serves me correctly, a broken mount on the drivers side of the block will allow the drivers side of the engine to raise up, when accelerating in drive. Since the 4 wheel lever is mounted on the drivers side of the transmission, this would pull the cable and possibly create the problem you've described.

I hope this is some small measure of help with your problem.

Good luck!!

Mar 16, 2011 | Jeep Grand Cherokee Cars & Trucks

1 Answer

It started with pulling 4 wheel drive lever to engage 4 wheel drive.It would take couple of seconds to engage.Finally engage light would appear showing engage.The light would blink a few times before...

Check the linkage under the vehicle that goes from your shift lever to a rod that then goes to the transmission lever. Sometimes a coupling will come loose. Simple return it to its' original position and re-tighten. Let me know if this helps. Thanks.

Dec 22, 2010 | 1995 GMC Suburban

1 Answer

Speedometer quit, Drive 4 light started flashing, check engine light now on, slight power loss when accelerating

check your wheel speed sensors. and vehicle speed sensor on the transmission

drive 4 uses it to sense slip in the front/rear wheels.

check engine light on because it needs to know vehicle speed to shift properly.

no speedometer because it turns the voltage into a signal to the gauge

Oct 06, 2010 | 1995 Honda Accord

1 Answer

4 wheel drive lights do not light up

Alot of times it's the electric shift motor on transfer case not working. With vehicle off key on press button and see if you hear it, next see if there is power down there when 4x4 is engaged. You haven't said exactly what your working on so if that's not the problem then you need to fill in some more info.

Apr 11, 2017 | 2004 Chevrolet Silverado

1 Answer

88 Bronco ii won't shift into 4 wheel drive.

Check to see if you are getting power through your switch on your dash. I also suspect your shift motor but it is a lot easier to check it with a test light.

Jul 01, 2008 | 1988 Ford Bronco II

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