What might cause hesitation first miles of driving ( cold startup)

[UR2NOZ]

93 SHO
It seems if I drive my car after it has been sitting overnight the first few miles I drive the car is very slugish and hesitant throught the rpm band. If you attempt to get in it a bit it will be very hesitant almost wanting to buck like its starving for something. Now after she warms up a bit, no issues and the car runs through the RPM band just fine. Any insight appreciated.

Adam

 

[morebhp]

Low fuel pressure could do this.

 

[UR2NOZ]

Low fuel pressure could do this.

Hmmm the car has a new pump wonder what could cause this.

 

[SHOsFAST]

Maybe plug wires? I don't know the pump could very well be the problem though... But I take it, it's running better when it warm? Try disconnecting the battery for a few mins if you havn't already. I would replace the Fuel filter if you havn't yet as well, it's cheap and easy to do...

 

[F-22 Raptor SHO]

gonna say run codes. Then if nothing, check the plugs and wires. When did you last change them? Fuel filter is a nice start as well. Air filter.....all of these could be issues.

Mine was a bad plug wire.

 

[UR2NOZ]

gonna say run codes. Then if nothing, check the plugs and wires. When did you last change them? Fuel filter is a nice start as well. Air filter.....all of these could be issues.

Mine was a bad plug wire.

Plug wires are new MSD's. Plugs I just changed. Now that the weather is getting warmer it doesn't seem to be an issue.