Loud pop after taking truck out of 4x4

I just bought my 2006 Tacoma SR5 4x4

I had never had a 4x4 so i decided to go try it out.
Everything was fine until i heard a loud pop as i was leaving.
I stopped, put the truck in Neutral and put the truck back into 2wd.
As i went in reverse the truck made a loud pop (i am pretty sure it was not suspension). then i put the truck in drive and drove off, everything was fine.
I checked the truck as i got home and everything seems fine..
Any suggestions as to what might have happened???
Thanks

 

It's normal if it was more like a clunk sound and I hope you weren't driving around on pavement with your truck in 4wd.

 

It was your front end disengaging after turning off the 4 wheel drive.

 

Ya just the 4wheel disengaging........def caught me off gaurd and it doesnt always do it......sometimes worse than others.

 

Thanks everyone!

 

X2 on this, does it sometimes and its sometimes louder then other times! Very normal! Enjoy that 4x4!

 

The more you use it the smoother the transition into and out of 4x4.

 

You don't need to stop when going from 4H back into 2WD. The only time you need to stop (and shift into neutral) is when going into and out of 4L. When disengaging from 4H back into 2WD take your foot off the gas...then turn the knob to 2WD. Doing it that way will avoid the "clunk" noise by taking the stress off the driveline... usually disengages smooth as butter.