Ok first off I have a 1997 Sahara auto with 4.0. Questions are, which transfer case do I have? Next 4wd still works, just makes noise, so would it be cheaper to replace it completely or to rebuild it? Thanks for all the help fellas!
You have a 231 t-case which is usually identified as an NP-231 or NV-231 depending on the year... with the NP-231 and NV-231 being the same... just different owner names of the same product.
Replacing it with a used replacement is a crapshoot since if you don't know its condition, the replacement transfer case might be bad too. I might be tempted if you can receive assurances the used t-case is in good condition. Caution the replacement t-case would have to come from a '97-99 TJ with an automatic transmission and 4.0L engine so it will have the right length & spline count input shaft.
Personally, I'd probably buy a new chain & rebuild kit & rebuild it. Such kits are out there, I believe Advance Adapters and JB Conversions may have such a kit.
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Yeah. I'm no transfer case expert but I'd say you need to look inside that or get someone else too. You're most likely gonna need to rebuild it as Jerry B suggested. Sounds like you have some broken gear teeth possibly.