E-4WD issues.

[xxxthat1dudexxx]

Brand new, first post, hopefully someone can help me out here. I have a 91 Ford aerostar, 4.0 with the a4ld tranny..awd as well...when i am going down the road, i get a very violent shake under the middle of the van. Took it to a shop and they pointed out that where the driveline to the rear wheels comes out of the tranny, its loose, as if a bearing may be bad?? still drives, just thunks really loud, and there is a lot of play in that end... so im assuming a rear output bearing...another thing, the front passenger wheel will lock up when i turn sharply, as if a cv axle on that side is bad..ive replaced it, still does it, along with the e-awd light on the dashboard blinking at me...wheel bearings seem to fine, along with all other suspension it appears...the tranny shifts excellent, van runs great..now heres my real questions...

1. Rear output bearing or something else?
2. if rear output bearing, will it make the front lock up due to the awd trippin out?
3. I dont have the money to fix all this, so heres my idea..front is binding, so if i remove both cv axles and essentialy make it rear wheel drive, will it work? i know the rear output needs to be repaired (if thats what it is), but it seems to me front differential is out, and i cant afford to replace that...so if i remove those axles, will i be ok?? ive attempted to remove the "front drive shaft", and cant get it out without dropping the exhaust, etc....hence the reason im considering cv axles


ANY HELP WOULD BE MUCHO APPRECIATED!!!!!!!!!!!!!!!

 

[BrooklynBay]

Welcome to this forum! Check the U joints. Sometimes the driveshaft could get bent. Since it's designed to use all of the wheels, it's not recommended to use it as a RWD. It will stress the E-4WD transfer case. It might be possible to electrically disengage the E-4WD set up though. That would be the only way to go if you don't want to make an E-4WD to RWD conversion.

 

[Doninwoodlands]

E4WD to RWD

Guys
This conversion is my biggest question.
I want to do this also.
While I can remove the front drive shaft and axle shafts, what will the transfer case do?
As with an axle differential, will all power go to the front (which is no longer there).

Don

 

[xxxthat1dudexxx]

Guys
This conversion is my biggest question.
I want to do this also.
While I can remove the front drive shaft and axle shafts, what will the transfer case do?
As with an axle differential, will all power go to the front (which is no longer there).

Don

That is exactly my thought...I checked my u joints and all, seems to be the rear output bearing in the back??? theres 2 inches or so of play, can hear the rear driveshaft jumpin all over bangin on the tranny, and it shakes the van pretty good...my confusion is that the front wheel was locking up, passenger side, so i assume front transfer case inside is binding, got a new cv axle in it so i know thats not it.....sometimes it will grab and makes an awful noise..i pulled the e4wd fuse and it still does it, just no light on the dash..it sounds like my front end is falling apart, but ive checked numerous times and it seems to be all inside the transfer case, binding up...sooo, my thought is that remove the front driveshaft, and the cv axles, it should be good to go...lol..just be dead weight..id think the rear would be enuff to move it along....bummer of the matter is removing the front driveshaft, out of the tranny...i cant get it out...help??? i cant seem to find to much stuff about these on the net, thank god this forum isnt a dead one..lol...
Til next time.......................................................................................

 

[BrooklynBay]

Search this section with the keyword E-4WD: http://www.explorerforum.com/forums/search.php?searchid=4790397

 

[Doninwoodlands]

What do we know, what do we need to know?

My search indicates that:
the controller is a computer under the driver's seat
it measures and compares the speeds of front and rear wheels
if rear is higher a magnetic clutch sends power to front wheels
a 70-30 power split is a base

We need to determine:
where are the sensors
does disconnecting the computer immobilize the magnetic clutch
what does the base 70-30 split mean, ie can that be made into 100-0
how is the front shaft connected to the transmission output shaft
if the front shaft is disconnected, will all power be directed to the front


We plod along.

Don

 

[BrooklynBay]

The speed sensor provides a signal for the module. The clutch can't engage unless it gets a signal from the module, so you could unplug the module or the connector on the transfer case.