I’m new here so hello everyone. I have a 96 land cruiser I guess it’s a 80 series maybe. I’m new to land cruisers as well. I got this one from my dad who owned it for 9 years before me. I took it on it’s first off-road adventure thru a place called Sequatchie cove. It’s a rough ride but we didn’t go far. First thing you have to do to get on the trail is cross a creek. We did. Water cane not over the hood but my son was touching water with his hand without leaning so kinda deep for a stock setup. On our way back through, we made it fine but it started running like something is stopped up. Idles great, revs great in park or neutral. When I put it in gear, it sputters and will die if I don’t let off. I have a code reader. Not sure exact wording but I said something to the effect of “ exhaust reburn clogged “. Someone said maybe cat convert. Stopped up. I revved on it in park to maybe blow it out and it didn’t help at all. It is now idling a little rough.