Bulldog99
New Member
- Joined
- January 4, 2011
- Messages
- 5
- Reaction score
- 0
- City, State
- Sherman Oaks, CA
- Year, Model & Trim Level
- '99 Explorer 4x4 EB
hello, i'm also new to the forum and been searching and found lots of useful info trying to diagnose this 4x4 problem.
Here is some background info about myself, I have been a motorcycle mechanic for 10 years now, but have very limited car and even less 4wd experience.
some background and info on the vehicle:
'99 explorer eddie bauer 4.0 SOHC, 4405 TC?, d2 axle code, which is 4.10 LS in the rear and open in the front (I think). it has 180K miles on it.
recently fixed a vacuum leak in the intake and replaced the 4wd Hi to Lo motor which was not functioning.
He is the problem and my dia. to date.
4wd is not working, the hi and low 4wd lights come on dash when switched, but there is no Auto 4WD, 4WD hi or 4WD low.
Had it up on blocks all 4 tires of the ground.
When in 4WD high (in nuetral, park or drive) if i spin either front tire in the forward direction the other tire spins in the opposite direct, but if i spin it in reverse the other tire does not spin. and both directions spin the front drive shaft.
Still in 4WD high (nuetral or park), I can spin the front drive shaft by hand in either direction.
If i put the vehicle into drive the front tires wont spin until I give it gas, like 2500 rpm, they dont spin nearly as fast as the rear
( i dont have a friend with me to see if he can stop them) but I tend to think is just residual friction inside the T case that is making it spin and not that the t case is engaging the front shaft.
like the same thing I see on a bike with the rear tire off the ground, in neutral there is enough friction through the trans to spin the rear tire, but if you put your hand to it it will easily stop.
After that I assumed the problem was in the t-case not engaging so I put a test light to the brown wire at the t-case and found power there.
but I don't have a volt reading or a ohms reading across the circuit yet all I know is it lit my test light up.
so sry for the long post, just wanted to get as much detail in as possible.
I am thinking that its a mechanical problem inside the t-case since I got power and I think the front hubs to drive shaft are working properly.
If there is something I missed or another step to test before I drop the t-case I would really apreciate the advice, thanks in advance for all the great work and help you guys offer.
Grant
Here is some background info about myself, I have been a motorcycle mechanic for 10 years now, but have very limited car and even less 4wd experience.
some background and info on the vehicle:
'99 explorer eddie bauer 4.0 SOHC, 4405 TC?, d2 axle code, which is 4.10 LS in the rear and open in the front (I think). it has 180K miles on it.
recently fixed a vacuum leak in the intake and replaced the 4wd Hi to Lo motor which was not functioning.
He is the problem and my dia. to date.
4wd is not working, the hi and low 4wd lights come on dash when switched, but there is no Auto 4WD, 4WD hi or 4WD low.
Had it up on blocks all 4 tires of the ground.
When in 4WD high (in nuetral, park or drive) if i spin either front tire in the forward direction the other tire spins in the opposite direct, but if i spin it in reverse the other tire does not spin. and both directions spin the front drive shaft.
Still in 4WD high (nuetral or park), I can spin the front drive shaft by hand in either direction.
If i put the vehicle into drive the front tires wont spin until I give it gas, like 2500 rpm, they dont spin nearly as fast as the rear
( i dont have a friend with me to see if he can stop them) but I tend to think is just residual friction inside the T case that is making it spin and not that the t case is engaging the front shaft.
like the same thing I see on a bike with the rear tire off the ground, in neutral there is enough friction through the trans to spin the rear tire, but if you put your hand to it it will easily stop.
After that I assumed the problem was in the t-case not engaging so I put a test light to the brown wire at the t-case and found power there.
but I don't have a volt reading or a ohms reading across the circuit yet all I know is it lit my test light up.
so sry for the long post, just wanted to get as much detail in as possible.
I am thinking that its a mechanical problem inside the t-case since I got power and I think the front hubs to drive shaft are working properly.
If there is something I missed or another step to test before I drop the t-case I would really apreciate the advice, thanks in advance for all the great work and help you guys offer.
Grant
