2007 Pontiac Montana Car stalls and accelerates suddenly

2007 PONTIAC MONTANA
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MNHUDA
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2007 Pontiac Montana sv6. I always use 87% Octane.

Problem: won't move/accelerate normally from stopped at signal or parked, seems stalled. Pressing on accelerator much more than usual results in sudden move/acceleration. The problem goes away after running 10-15 minutes. Face this problem once or twice a month.

Recently (in winter) in the same problem condition, needed more pressure on acceleration to start moving/sudden acceleration. However, the car starts moving and stalls and moves and stalls for 4-5 time with continuous pressure on accelerator. Seems like the engine pushes and stops 4-5 time. I noticed amber/yellow engine signal is ON.

Any suggestion would be highly appreciated. Thank you for your time.
Jan 4, 2015 at 7:52 AM
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HMAC300
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scan for codes and check fuel pressure first with a gauge auto parts rent it.
Jan 4, 2015 at 8:06 AM