Spitting sputtering popping, when pulling from idle

2006 CHEVROLET EXPRESS
207,000 MILES • 4.8L • V8 • 2WD • AUTOMATIC
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MDCMOYER
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My van is now spitting,sputtering, popping, when pulling out from idle after running air conditioner. Seems to want to stall. Runs great/strong with air-conditioning on as long as I am on Highway. Seems to be choking up for some reason. Could you please help me figure my next step?

Thank you,
Dan
Aug 13, 2016 at 6:53 PM
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HMAC300
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scan for codes and check fuel pressure with a gauge auto parts rent it.
https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
Aug 15, 2016 at 7:22 AM