4x4 Noise

Good evenin everyone, Lord willin you're havin a nice Christmas Eve whether at home or on duty.
When I engage 4wd (hi), there's a thumping/metal clanging noise; happens in 1st & 2nd gear, and sometimes reverse. And especially when turning into a parking space. This happens only when I'm in 4-Hi. (1st Gen Tacoma; 2.7 manual trans)

I appreciate any and all info you can suggest. No rush.
Thank You!

 

Do you run your transmission on a regular basis? How many miles are on it?

 

roughly 135k; and I only use 4wd in mud or snow, rarely have it engaged for over acouple days

 

turning and 4x4 anything is a no-no. not a big no-no, just a no-no.you can damage something that way. other than that, a clunking noise while engaging is kinda normal.

when you engage 4x4 hi or lo, is the clutch fully depressed? or do you just gun-ho it while moving?

 

clutch is fully depressed; no gun-ho haha, it's my daily driver - can't afford to have her outta commission

 

has it been doing this for some time or just recently?

 

just recently; primarily when it started gettin below 30deg overnight afew weeks ago (soon after Thanksgiving - now). Front diff and T case have fluid

 

i suspect a partial clutch engagement. hows shifting? any harder? any grinding more?

 

shifting is fine, both in and out of 4wd. The noise is usually in the first few seconds of 1st gear (from a stop to about 20mph), then all through 2nd, but not every time I drive. It's sporadic.

 

huh..... sounds like it has something to do with rubber. whether it be a boot for the cv axle, or a mount or driveshaft support. check their conditions i guess or try and get a recording of the noise as best you can.

 

Awesome, Will do. Thank you for your help; Merry Christmas