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angelawrangler 02-22-2009 01:06 PM

transfer case grinding & poping
87 wrangler 231 case if i put it in 4wd and engage the front axle i get a poping sounnd if i gasd it, if i slow gas no noise, if i turn hard left or right and roll i hear a grinding sound then eventually pops, leave it in 4wd and disengage the front no noise any ideas??

Coyote_94YJ 02-22-2009 01:17 PM

Is this on pavement or dirt/gravel? It almost sounds like the chain is skipping. You see the front and rear don't turn at exactly the same speed so as you travel tension builds between the front and rear and eventually the tension becomes great enough to cause the chain to skip a tooth on one of the gears inside the t-case. This doesn't normally happen on dirt, gravel, mud or any surface with less traction. On dry pavement it isn't uncommon for this to happen if driven for any distance. You could have a stretched chain or just too much traction for using 4WD. Dunno without hearing the sound.

jpdocdave 02-22-2009 01:18 PM

were you asking the same thing on another forum? sounds real familiar today. sounds like u joints.

afrats 02-22-2009 03:11 PM

How's the fluid in the t-case?

ty95yj 02-22-2009 10:06 PM

if its a countinuous poping noise and you still have 4wd then its most likely u joints. if you have no four wheel drive its either in your t case or front diff. first thing do is grab your front drive shaft and see if its loose anywhere. if it is check your u joint on that side

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