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hard to restart hot 5.7 engine

eblock

New member
I have a 2006 5.7L Gxi-G (320hp). It will start cold and run great. Then when shut off it will usually not restart, unless I put the throttle in high neutral (like it was flooded). It is tuned with new plugs. I was told my fuel pump and coil are fine, that it might be a problem with my IAC (Idle Air Control) part # 3843750. Any suggestions?
 
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