04 grand am stalling and misfire on cylinder 5

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04pain

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04 grand am 3.4 stalls at times when hot and misfire code for cyl 5. Started loosing power and then shuting of bit only with ac on and outside temp. hot. I've already replaced the ign. mod, swaped injectors, replaced spark plugs, upper intake fore a crack. I have swapped coils and replaced plug wires. At a loss on what wrong and need help.
 
Have you checked the fuel pressure. How long since the fuel filter has been changed?
 
did you do a compression test?
 
Yes performed compression test and cylinder leakage. Both ok. Replaced fuel filter 3 months ago and fuel pressure was good but never had hagenuk on it when it cuts off.
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