4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

Rough When Cold

Old 04-29-2009, 01:52 AM
  #1  
turbo2.3stang
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Default Rough When Cold

My 2000 GT has stumbled on the first start up everyday. It acts as though it is misfiring and then evens out 10 minutes down the road. Has anyone ever experienced this? Im not throwing any codes. Ive always had bad experiences with ECTs but Im not finding too much info on that being a problem with these mod motors.
Modifications: Accufab plenum and TB, CAI, Longtubes, X pipe, Flows, Diablo. I don't have any vacuum leaks because we just replaced all the upper gaskets on the motor. Any help is appreciated
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Old 04-29-2009, 09:02 AM
  #2  
grogan
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Default

ive got the same problem..i cant even start my car in the winter unless its in a heated garage. i dunno how to fix that, its happened to me every since i put the superhcharger on.
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