i just bought my first Ram, im 16, and im very satisfied with it.
After i bought it the guy said the 4x4 worked i took his word for it mainly because i got it really cheap.

anyway, the 4x4 turn out not to work things i have done:

Replaced the actuater on the front axle that locks the front wheels together
Replaced the vacuum switch on top of the transfer case
Checked the lines between the vacuum switch and the actuater


also the light on the dash does not come on

there is vacuum at the actuater that is on the axle and it does alternate when u switch between 2 wheel and 4 wheel but is somewhat weak.

the front drive shaft does turn and engages without grinding

i begging for help here i cannot live with out 4 wheel drive anything u can help with is much needed ty all

 

How do you know it's not engaging? The only real way I know of to check is to put it in 4 wheel then shut it off and jack one side of the front end up and see if you can turn the wheel.

 

by engaging i ment the transfer case begins to turn the front drive shaft i checked by puting it into 4 wheel and had my step dad watch the shaft as i moved the truck

i also put the entire truck on jack stands and put it into 4 wheel so i could check the drive shaft and the wheels as u suggested drive shaft still turns but the wheels still do not lock

 

Did you get the fork back on the collar correctly when you reinstalled it? Here is a guide you should read. http://www.dodgeram.org/tech/repair/..._engagment.htm

 

Welcome to dodge forum, check your linkage to make sure you're actually fully enguaging the 4x4.

Also please fill out your information in your signature and your details on your truck it will help us help you easier and you will get alot more responses on your questions.

 

according the the page u directed me to yes i did put the fork on right

ty for sending me to a page that told me the needed vacuum presure i will check tomorrow when i get to my grandfathers body shop


also i filled in my vehicle information couldnt find my signiture to put info on it but will keep looking.... ty all again for help ill post tomorrow with what i find on the vacuum pressure

any other ideas are more than welcome and wanted

thx again Dusty

 

put it in 4x4 high, put it in drive and put the parking brake on.. Climb under the truck and see if you can manually spin the front driveshaft by hand. If you can then you have an issue with your transfercase but if you cant then it's going to be something with the front axle

 

checked alrdy i cannot hand spin the drive shaft when in 4x4

is it possible that a vac leak between the vac switch on the transfer case and the moter could cause it not to lock

 

Eh, possibly but doubtful because if it was a vacume issue you wouldnt be able to shift it period, the fact you cant spin the front driveshaft by hand when it's in drive then that means the transfercase is doing it's job it's something to do with the front end.

 

ok well ill start with checking the vac pressure i believe that is prob it because when i checked for the vac alternating between the tubes it was pretty weak any ideas what would cause this?