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I think it's your EGR Valve. The EGR valve, or Exhaust Gas Recirculation valve, is a vacuum controlled valve which allows a specific amount of your exhaust back into the intake manifold.The EGR valve, or Exhaust Gas Recirculation valve, is a vacuum controlled valve which allows a specific amount of your exhaust back into the intake manifold. You'll know if your EGR valve is stuck or malfunctioning because your car will experience symptoms like rough idle and bucking on acceleration.

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โˆ™ 2008-12-23 21:41:27
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Q: 1986 Chevy Astro Van V6 43 hesitating on take off but then runs fine after that?
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