A lot of good information here. Keep it up and thanks for the help.

 

I am having the same problem with my 4wd, 1997 Ford F150 and came across this posting but can't locate the Transmission Range Sensor Switch on the transfer case. Looking at the transfer case from the bottom and just don't see it. Any suggestions would be greatly appreciated.

 

New problem...not adressed here. (Read whole sticky and great info though!) ...when I put in 4hi and/or low... I get a growl/hum, so I speed up some and it louder..when I left off the gas I hear clicking...almost like a card in the bicycle spokes only metal, if that makers any kind of sense. Please help!
So far I've diagnosed it back to clunk/clang at the u-joint/yoke of the tranny side of 4x4 deiveshaft. (That's 4wd engaged, and moving front wheel back and forth)
I noticed in that guys ADVERTISEMENT esof motor or something... that pic is right where im hearing it.
Also, when listening, if I switched 4wd on and off. It is clicking right thee like it is working.

My guesses are that electronic motor/ or u-joints on 4wd d/s?? ....would love some thoughts please

 

Btw.. this was typed on my phone so sorry for sooo many typos! Lol I re-read it when done and sound retarded! Please help me anyway!

 

this is great i was just looking for some info like this because of what problems i am having with my 97 4x4 i can go in and out with the shifter but the 4x4 will not work and yes the light works fine so i will try and see what i can do next with the info you have found thanks

 

I notice you posted 1997 to 2003.
I have a 2001 F150 Lariet 2 wheel drive and want to convert it to 4X4 with parts from another vehicle. What span of years are identical to the 2001?

 

Looking for an answer if someone mite know.I hav a 99' f150 4x4 and when its in 4x4 and it sits it drains the battery.doesnt do it in 2x4 only in 4x4.

 

hello i have a 1995 f150 4x4 300 strait 6 6"lift 35-12.50-15. i have replace all the barings and seal in left hub. new upper an lower ball joints. new tie rod an tie rod end. still when i drive the truck an hit the smallest bump with the left tire the front end starts to shake very bad. what could be my problem??

 

SWELLEY, try pitman arm or idler arm depending on what side.

 

i have replaced the pitman arm when i done the lift....its the left front tire that shakes

 

is it electronic 4wheel drive? if so u may want to try the electronic 4hi to 4lo slector on the transfer case it may be staying on

 

SWELLEY, mine is manual shift on the floor 4x4.I have same size of tires on my chev and I had to replace old bushings in frontend to fix that same problem.

 

great info - thanks

 

So here's my problem. I haven't used 4x4 in over a year because the vacuum actuator was bad. During this time I could engage the transfer case, and the 4x4 light would still come one.

About 3 months ago, I noticed that when engaging 4 wheel drive, the 4x4 light did not come on. Didn't think anything of it, because my vacuum actuator was bad and couldn't use 4x4 any ways.

I ordered a new vacuum actuator and installed it about a month ago. During the install, I noticed that I have a constant vacuum on both the engage and disengage line. Engaging the transfer case does not change the vacuums, and the 4x4 light still does not come on.

I had my roommate touch the vacuum solenoids as I engaged the transfer case. He said that he couldn't feel anything click on either solenoid as I engaged or disengaged the transfer case.

What are y'alls first thoughts? Solenoids,transfer case switch,.....

I can rule out the vacuum lines, vacuum actuator, and fuse 23 as being the problem. Do you think it's more likely to be a solenoid problem or the switch in the transfer case?

 

If interested I have a 99' f150 4x4 that im parting out and all the drive train is in good shape.