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Ron
Ron, ASE Certified Technician
Category: Ford
Satisfied Customers: 23001
Experience:  23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs
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Thein my 2002 ford ranger will not engage. the switch works,

Customer Question

the*****in my 2002 ford ranger will not engage. the switch works, the module works and the transfer case engages so the front drive line turns but, the wheels do not?
Submitted: 2 months ago.
Category: Ford
Expert:  david craig replied 2 months ago.

Hi Im David. thanks for visiting the site. please allow me a few minutes to look up some information on your vehicle. thank you.

Expert:  david craig replied 2 months ago.

How do you know the transfer case engages?

Customer: replied 2 months ago.
front drive line turns when put in drive, with the car on blocks and four wheel engaged.
Expert:  david craig replied 2 months ago.

not good.

Expert:  david craig replied 2 months ago.

have you checked the front diff fluid?

Customer: replied 2 months ago.
not good phone reception where i live.
Customer: replied 2 months ago.
Expert:  david craig replied 2 months ago.

sorry, the site does that automatically.(offers a phone call)

Customer: replied 2 months ago.
fluid appears dark but full.
Expert:  david craig replied 2 months ago.

so when its on blocks, 4wd engaged. front prop shaft turns but wheels dont?

Customer: replied 2 months ago.
exactly
Expert:  david craig replied 2 months ago.

wow. ok, if you manually rotate the front wheels how do they feel?

Customer: replied 2 months ago.
fine, no noise or catching. spin free.
Customer: replied 2 months ago.
4 wheel worked fine one day than not the next.
Expert:  david craig replied 2 months ago.

ok, i need to do some searching give me a while. thanks

Expert:  david craig replied 2 months ago.

i would like you to check all of these fuses. thanks

Customer: replied 2 months ago.
under the hood or in the cab? I checked the one in the cab that the book said is for the switch.
Expert:  david craig replied 2 months ago.

the first one is under the hood. the rest are left side of dash

Customer: replied 2 months ago.
this will take some time. how do I get back to you?
Expert:  david craig replied 2 months ago.

right here. ill leave it open.

Customer: replied 2 months ago.
all apear to be good.
Expert:  david craig replied 2 months ago.

did you pull them out to look at them?

Customer: replied 2 months ago.
did not use ohm meter.
Expert:  david craig replied 2 months ago.

ok. good. at each of those fuses. with the key on. check for voltage

Customer: replied 2 months ago.
I also pulled off motor on transfer case and had someone else work dash switch. motor worked.
Customer: replied 2 months ago.
ok. i will get back to you when I'm finished.
Expert:  david craig replied 2 months ago.

ok....give me a while to look at something. thanks

Expert:  david craig replied 2 months ago.

are these vacuum hubs?

Customer: replied 2 months ago.
all fuses check out good.
Expert:  david craig replied 2 months ago.

are these vacuum hubs?

Customer: replied 2 months ago.
no
Expert:  david craig replied 2 months ago.

ok

Expert:  david craig replied 2 months ago.

so they are manual hubs?

Customer: replied 2 months ago.
no, Im not sure how the hubs work. I changed wheel bearing hubs once and did not see any type of 4x4 hub. i thought they worked off of the driveline from the transfer case?
Customer: replied 2 months ago.
some how inside the front differential.
Expert:  david craig replied 2 months ago.

no, they work from the hubs.

Customer: replied 2 months ago.
vacuum hubs stopped in 2000
Customer: replied 2 months ago.
I can't find any information on how they work after the transfer case.
Expert:  david craig replied 2 months ago.

ill send you all that info. we'll figure it out,

Customer: replied 2 months ago.
pushed the wrong button, don't call.
Expert:  david craig replied 2 months ago.

ok.... i got to take puppy for a walk. be back in 30

Customer: replied 2 months ago.
k
Expert:  david craig replied 2 months ago.

heres a description

Customer: replied 2 months ago.
my problem is inside the front differential?
Expert:  david craig replied 2 months ago.

we are going to find out

Customer: replied 2 months ago.
It does not say anything about locking hubs.
Expert:  david craig replied 2 months ago.

correct you dont have them

Expert:  david craig replied 2 months ago.

another test

Expert:  david craig replied 2 months ago.

sorry sent you the wrong info.

Customer: replied 2 months ago.
I will have to do this tomorrow, the truck is no longer up on blocks. I have to drive it. So if the wheels don't turn than on to the axle ends?
Expert:  david craig replied 2 months ago.

yep

Expert:  david craig replied 2 months ago.

happy new year. talk to you tomorrow

Customer: replied 2 months ago.
I should be able to check by pulling the shift motor off and manually turn the shaft to 4h or 4l to see if its working??
Customer: replied 2 months ago.
Thank you. Happy New year!
Expert:  david craig replied 2 months ago.

yes to the above

Expert:  david craig replied 2 months ago.

just checking in to see how its going