What now? STILL running rough

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After reading some of the answers I thought of that, but why didn't that show up on the scans? I don't want to by another part and have the same problem. How can I test for it? It's easier to test the wires--simple things first. I have a manual but it's basically the same thing: "it could be this or this or this". I work on cars myself and maybe that's why they are taking advantage of me (female). Also want to share info for huge savings on parts: PartsAmerica. Com. You look up your part and they send you to a local affiliate, where you get up to or even more than a 50% discount. The site tells you if it's in stock, and the "affiliate" can't jerk you around. Only on a special order--like a custom/import part--can they charge you a regular price. Well thanx for the suggestion. Maybe I'm getting somewhere. Why the fuk did they put computers in cars?

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I had checked for vacuum leaks but will try the gumout thing. Don't have a code reader--have enuf useless tools! A MAp sensor will cost me about $100-even at a discount price (PartsAmerica) so thanx for the tip. Will keep you updated until I find the problem. This should be a really good engine when I'm done! My last old beater won 2nd in a Demo Derby-it had a V-6 in it too. P.S. Cool name. That was my uncle's name too, only spelled Merlyn. (German)