4.6L General Discussion This section is for non-tech specific information pertaining to 4.6L (Modular) Mustangs built from 1996 to 2004.

Sputtering Problem

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Old Aug 7, 2023 | 12:58 PM
  #1  
Ajsfosix's Avatar
Ajsfosix
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Joined: Feb 2023
Posts: 5
From: Nevada
Default Sputtering Problem

My 2004 Mustang Gt will sputter under acceleration. This problem has been going on for at least 6 months now. First I installed new plugs and coils and that fixed the problem for a couple of months. Then the car started sputtering again. I replaced the fuel pump and filter and the car was good for another few months. I was able to go WOT without any problems. But then the problem showed up again. If I could get any help on what the issue is I would appreciate it a lot.
Old Aug 9, 2023 | 02:46 PM
  #2  
Derf00's Avatar
Derf00
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Joined: Feb 2005
Posts: 13,189
From: AZ
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How long does the car sit? Could be bad fuel.
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