i have a 2001 tacoma 2.7L 4x4 MT wo diff lock or ABS. in the past 2 months i been hearing a clicking (just one click then it is gone) noise only when i start off forward and backwards about 8/10 times. do not hear it when driving only on starts or if you leve it in gear and rock the tire. the sound it not getting worst. it sounds like a bad u joint but i have checked and replaced them.. a good friend of mine checked and it seem he thinks it is in the Transfer case (he is a Toyota mech and well trusted and it was not at Toyota but on his own time) and not sure wat it could be inside maybe the chains or bearing.not having problems with 4wd it is staying in and no noise. have problems finding a used one bc i have the 4 banger.. looking at getting a rebuilt one at Marlin crawler but don't want to jump in to it and it not being the issue. any ideals??:help: thanks