You don't specify whether auto or manual.
If auto then yes, the gearbox has a limp home mode, however I thought that this just causes the gearbox to stay in second.
If you're not getting over 2100RPM I'd be suspecting either the fuel pump, filter or injectors.
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JK Wrangler | 2" Lift | 33" MTZs | TJM Front Bar | ARB Rear Bar Member of the
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