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2004 Pontiac Bonneville Question: stalling on idle when warmed up. Already replaced MAF sensor. Runs great cold

 

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flannel, 3.8L V6, Oklahoma City, OK, April 30, 2014, 14:23
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Also is worse as outside air temperature is warmer. It becomes more apparent. Also will intermittently surge as accelerating is taking place, but not always.

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