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    350 TBI Runs Rough When EGR Valve Opens

    Hello, I'm new to the forum. I have a stock 1989 Chevy Suburban 350 TBI with an annoying problem. At low speeds, when the EGR valve opens, the truck runs rough and will almost stall. Its most noticeable if I'm pulling out of a parking lot where I'm driving at low speed with gentle acceleration...

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