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99 ls1 stumbles on acceleration

This is a discussion on 99 ls1 stumbles on acceleration within the Firebird / WS6 forums, part of the Vehicle Specific category; the car runs fine when its cold but when it gets warmed up it boggs down/stumbles from about 1200-2000rpms on ...

  1. #1
    Junior Member
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    1999 Pontiac Trans Am

    99 ls1 stumbles on acceleration

    the car runs fine when its cold but when it gets warmed up it boggs down/stumbles from about 1200-2000rpms on take off when im at the track the more i race the worse it gets and have no clue what it is

  2. #2
    Member 408WS6's Avatar
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    Jan 2006
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    Houston
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    50
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    Current best: 10.60/126.8
    1998 Pontiac TA WS6

    Is it a manual or auto? If its an auto, easy fix, just get a stall. If its an m6, this is common. The ls1's don't really like being full throttle below 2000 rpms when launching. I had the same problem when I had an m6. There are many things you can do, but it just depends on what your willing to spend and what your goals are. Mostly, its just takes practice working the clutch.

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