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If the engine is smothe at lower speeds it probably is the tcc in the torque convertor. The egr and pcv both are on the upper engine behind the throtle body on your 3.8 engine.

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โˆ™ 2004-10-30 10:24:41
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Q: Where are the EGR valve and PCV valves on a 92 Buick Regal 3.1 engine?
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