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To answer your question, Staylo, its the NP-231 transfer case. I did a fuel rail cleaning, oil change, fixed the exhaust, however, it still idles rough. I'm going to try and check for some more vacuum leaks, however, I think the temp sensor is bad, so perhaps too much/ too little fuel is being metered at idle because the computer thinks the engine is hot or cold when it's not. My guage is wacky. Everything above idle seems smooth and normal.
For now, my tranny is leaking terribly, so I'll have to try and fix that. I think it might be the output seal (where the tranny meets the transfer case), however, it looks like it might be from the bolts where the tranny bolts to the crossmember. I'm sure I'll find out.
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