Running rough

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Joser33991

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May 3, 2025
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Hello,

My liberty is running rough and now has got to the point where I turn on AC it causes it to sputter and shut completely off. Changed out coils and spark plugs because vehicle had been sitting a while but brought it back. Also changed throttle body sensor, iac sensor, and vac hose. No change
 

cas123

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Apr 10, 2023
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If you ruled out a vacuum leak it could be not enough fuel is getting through. Did you check the throttle body itself? Mine was quite dirty one year and it helped when I cleaned it. If it sat for a while the injectors might be clogged. Maybe run some injector cleaner through and see if that helps? Also your Cat could be clogged. You could try some Cataclean.
 

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