4x4 won't engage????

[ricej]

I have a 91 x Sport. When I press the selector to ingage the 4X4 I get Nothing!!! No lights! No click from the processor ! I checked all connections. I was able to apply 12v direct to the Tranfer case motor and and go from 4x2 to 4x4 low. I have checked continuity at transfer case motor pins and etc. I have also did the processor check! (Disconnecting both plugs, turning the key on and depressing the white test button. I get a solid light which indicates processor problems.????

Could it be something I have over looked!! Please advise!!

I hate to buy a new or used processor and that not be it.

Any Insist would be appreciated!!

Thanks,

Jeff

 

[TPLYNCH]

check out the info on this site regarding the transfer case/4x4 problems if you haven't already. Dead Link Removed

 

[yellowz]

What did you ever find out on your 4WD problem?

 

[ricej]

No luck yet!

The articles Tom Lynch refered me too by Dr.Bob and company is a good won.
Dead Link Removed

I tried most of those checks before posting my thread.

I think its looking like a Processor or possible bad limit switches.

But, Still Inquiring....

 

[LS431o28]

had same problem. I pulled the little motor off the case and poped it open had some gum buildup on the contacts. I just cleaned the off and wala it shifts fine. just becarefull when you open it up i believe it has to be put back exactly otherwise you will be fiddling with it to get it to engage all the way.

 

[ricej]

Thanks, for the Input. A few days ago after a multitude of test I decided to pull the motor and clean the limit switches, brushes and etc. I also replaced the Shift processor (WHICH WAS BAD !)

All works fine know.


I'd like to thanks all of you who repled to my Thread!!



THANKS....... and happy motoring.....

Jeff

 

[yellowz]

Yea, you might know it would be the expensive part. But I did finally get my hands on a Ford factory service manual with Elec/Vac also on cd-rom. It gives a lot of trouble shooting for all the 4WD 4x4 stuff. Still looks like my module also.

 

[Blake D]

Where is that motor that you can pull off and clean without taking off the entire t-case? I looked at the post but not sure what I will be looking at under there. The whole big thing or what? driver, passenger, front, back, top , bottom.
I haven't had anyone ever teach me about auto work tought myself everything (not super but capable) along with what I read from you guys. Sometimes I get lost and need a broader picture painted for me before I can begin to determine if it is something I want to tackle. NO money right now but I need this fixed. Thanks for understanding and for someone always willing to help, even with the basics and seemingly dumb questions.

Blake

PS someone said hit it with a rubber mallet, where and what EXACTLY should I hit to try this quick finger-crossed fix?

 

[njsjfonline]

was able to fix it

Hi all I was able to fix the 4x4 motor. It was very ez.
But I would first check out Dead Link Removed
This link was very helpful.
My motor had or has a broken magnet so I guessed I’d give it a try anyway
So I cleaned out all the broken magnet parts, cleaned the motor it self.
Put it all back together and it’s working good

 

[Blaine122300]

I hit mine with a mallet on the big shiny silver cilinder that goes perpendicular to the drive train. after I did that, all worked well. I dunno, I must have jarred something loose?

Andy

 

[njsjfonline]

also tryed hitting it

and thats how i think i broke the magnet

 

[njsjfonline]

update

Well That did not last long.My 4x4 is not working again
but that ok i'll just get a new motor.
I guess i'd call that trouble shooting. Now i know it's the
Motor. and will pick one up next week. But i think i'll try the junk yards i know how to R n R them now.
Thanks all
Sam:exp: