acceleration

  1. S

    1998 acceleration problem.

    I've got a 1998 v6 3.8 Automatic mustang. the problem is when i'm driving for over say.. 30-40 minutes i get this acceleration problem. the engine won't rise over 2000 RPMs while in drive. when i put it into Neutral it won't go over 4000 RPMs the engine starts to act like it wants to die...
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