Question about 1996 Geo Tracker 2 Door

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Front wheel drive not operating - 1996 Geo Tracker 2 Door

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Does it have manual hubs? If so, try disassembling the hubs and cleaning them. This happened to me after a while. I try to engage the 4WD at least once a month for 5-10 minutes on a loose gravel road to keep everything moving.

Posted on Aug 02, 2008

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New holland tc 40 4wheel drive not working.Drive shaft turns front wheels don't


check that the 4 wheel drive lever is in 4x4 application as the front diff will make the shaft turn when moving
if it is constant 4x4 drive , that leaves a problem in the center diff operation or a broken axle in the front end

Oct 01, 2016 | Cars & Trucks

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4 wheel drive won't engage


Front wheel drive not operating
Front wheel drive not operating Does it have manualhubs? If so, try disassembling the hubs and cleaning them. This happened to me after a while. I try to engage the 4WD at least once a month for 5-10

Aug 28, 2015 | 1995 Geo Tracker

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4 wheel drive won't engege


Front wheel drive not operating
Front wheel drive not operating Does it have manualhubs? If so, try disassembling the hubs and cleaning them. This happened to me after a while. I try to engage the 4WD at least once a month for 5-10

Aug 28, 2015 | Cars & Trucks

1 Answer

Why does my 4 wheel drive not work all the time?


Elaine,

not work, do tell what makes you think it dont work (a lamp) or tires slipping or dead tires. (by tires mean that and traction)??????????

what mode fails, of the many, and where.???????



first off, we dont know what your tires are touching.

on road, or off road. pavement or ICE or snow.

that matters big time . (you read manual and match MODE to Road)

your lost operators guide explains all that, right?

eg: how and when to use, 4wd, its all there. I promise.

ControlTrac 4-wheel-drive system



here are the mode. which one , gives you problems.



quote ford with comments.



What are the modes, and how do they differ?

(note this is the operational behavior of a 2008 Ford Expedition. Newer and older Expeditions will vary only slightly)



2H 2-wheel-drive with high range gearing (1.00:1) Rear-wheel-drive capability,

2-wheel electronic traction control system is enabled



4A 4-wheel-drive Auto with high range gearing (1.00:1) Full-time all-wheel-drive capability, ((best on pavement or any time)

Electronically adjusted torque split to front & rear wheels, Electronically variable center differential,

Front driveshaft & rear primary driveshaft allowed rotational speed difference,

4-wheel electronic traction control system is enabled



4H 4-wheel-drive with high range gearing (1.00:1) Part-time 4-wheel-drive capability, (not for dry pavement EVER)

Continuous 50/50 torque split to front & rear wheels, Electronically locked center differential,

Front driveshaft & rear primary driveshaft mechanically locked with no rotational speed difference,

4-wheel electronic traction control system is enabled



4L 4-wheel-drive with low range gearing (2.64:1) Part-time 4-wheel-drive capability, (off road usage, mostly)

Continuous 50/50 torque split to front & rear wheels, Electronically locked center differential,

Front driveshaft & rear primary driveshaft mechanically locked with no rotational speed difference,

4-wheel electronic traction control system is enabled, ESC and RSC are disabled



In 4A mode the center differential is electronically-controlled and rear drive wheel bias. The on-board computer monitors for any sign of rear drive wheel slip (loss of traction)

If loss of traction is detected, the center differential is told to send a share of the engine\'s torque to the front drive wheels. It will not let the front driveshaft turn at the same speed as the rear driveshaft.



What about traction management?

1997-2002 model Ford Expeditions offered an optional limited-slip rear differential (LSD). A conventional open rear differential was standard along with the conventional open front differential and the electronic locking center differential.

comment with out LSD, one tire can spin, on say ice.

but the other 3 tires dont, in full time.

Jul 04, 2014 | 2003 Ford Expedition

1 Answer

Ford explorer 2000 all wheel drive not working


all wheel drive vehicles have to work at both ends all the time unless you have a major failure in the drive train. That is why it is called all wheel drive as opposed to 4 wheel drive. With 4 wheel drive you have the option of rear wheel drive or 4 wheel drive and normally in a high ratio or low ratio gear selection. With some all wheel drive vehicles there is a selector that locks the middle diff and creates a 4 wheel drive option without the high/low gear ratio option. So in practice if the both front wheels are in the bog then there is no all wheel drive as the centre diff is working as it should and placing all the action in the rear wheels which will not be turning as they have traction so the front wheels spin faster.. If you have a centre diff lock option ensure that it is operational.

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1 Answer

Holden rodeo 4x4 not engaugeing


ther will probably be a vacuum operated actuator on the shaft to engage the transfer case. Check to see if it has vacuum and is actually working because without it there will be no front wheel drive

Jan 29, 2013 | Cars & Trucks

1 Answer

4 wheel drive system not operating, have already repaced drive motor on transfer case, still not working


Lift and support the front of the truck so the front wheels are off the ground ( take safety precautions, chock wheels, jack stands, etc )
Engine 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 dive shaft does not turn, check that the vacuum shift motor on the front axle is operating.


Item #10 in the diagram below.
9bcf2eb.gif

The vacuum shift motor is vacuum operated ( name says that, I know ) the pink vacuum line is 2WD operation, the Light Blue vacuum line is 4WD operation.
If the motor does not move, you can check the vacuum lines to the vacuum solenoids on the firewall
7f1140f.jpg

The other is the vacuum reservoir behind the battery
fd65776.jpg

Oct 18, 2010 | 1997 Ford F150 Regular Cab

1 Answer

The transfer case will not shift into 4 wheel hi or low 4 wheel drive auto with elect shift


I would suspect the vacuum disconnect motor or the vacuum solenoids for the disconnect motor ( or the vacuum lines ), but best to confirm
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.

With the engine running ( and wheel chocked, parking brake on ) have someone shift into 4WD, and watch the shift motor to see if it operates
It is on the front axle, looks like this
85ec248.jpg

If the disconnect motor does not shift, you can check the vacuum on the lines with a vacuum gauge. Blue line is 4WD operation, pink line is 2WD operation.
The vacuum solenoids are on the firewall, and look like this
50a3265.jpg

This is the block diagram for the ESOF vacuum operation of the disconnect motor.
c01c924.jpg

This is assuming you have checked the fuses for the transfercase shift motor, and the vacuum solenoids.

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Chrysler 2000 what happens if ball bearing is not fixed drive with a humming sound


if front wheel bearing worst wheel falls off and rips out one side of front brakes and some suspension parts--wheel collapses into fender and front end damage --wheel seizes damaging spindle if driving put car into skid the longer any part is allowed to operate while damaged usually will break and cause more damage

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