Originally Posted by mebanks02

Two days ago I was leaving work; My crossfire had been sitting maybe 7 hours or so as always. Started just fine, but after the high idle went away there was a quick stumble and a check engine light.
- Checked the DTC, Cylinder 4 misfire.
- Pulled both plugs, looked fine.
- Cleared the code and started the engine.
- Engine ran and idled fine.

Drove the vehicle the next day and night. Both city and highway with no issues. This morning I left for work and she started perfectly and idled perfectly.
- Drove 10 minutes in the city, nothing above 1/4 throttle and 35mph.
- Got onto the entrance ramp for the highway.
- 3rd gear accelerate and a HUGE stumble and it stalled out.
- Confused, I cranked the engine while coasting and nothing.
- Stopped on the side of the road and cranked again, nothing.
- Let it sit for 45 seconds to a minute, cranked and it started. With a check engine light.
- Idled ok at best, has throttle response but dies above 1/2 throttle.
- Attempt to go above 1/2 throttle and the car dies again.


To me, this seems like a fuel pump issue just from past experience and knowledge. But I also know that the Crossfire is a rare breed of odd resolutions and causes. 2005 Limited, 105,xxx miles. Well maintained and not beaten. Not significant changes in the last couple of months. Brakes and an oil change are about it. So nothing comes to mind that would hiccup.

Let me know your thoughts.

Thanks