My 4 wheel drive worked earler today and on my way home it wouldn't go in to 4 high or 4 low. Does anyone know what could be happening?

 

When you flick the switch does the 4x4 light come on?

What year / model truck?

 

Solenoid on the fire wall under hood on driver side, 4x4 relay under hood on passenger side or transfer motor needs a couple of lite taps

 

Hey im having the same issue on my 07 if I pull the vacuum lines and turn the tcase into 4x4 it works I bought a new actuator and it did nothing any ideas?

 

clogged vent line... or bad IWE solenoid

 

How do I test the solenoid and where is it located?

 

located on the firewall behind the battery... when you pull the vacuum lines this will allow the vacuum to vent from your IWE's and engage...no matter what position your switch is in. Vacuum holds the IWE's dis-engaged... when you turn your selector switch to 4WD if working properly will tell the IWE's to vent...

 

Ill check the vents but im thinking its the solenoid

 

That would be my first choice also... being that when you pull the lines your IWE's engage...

 

Yeah im definitely fixing it today the fun of drifting every where ended when It took an entire light to get my momentum going