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Help! Car Jerks When Accelerating..ideas?

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I will try to explain this the best I can. 94 LS400. All Services performed in Last year except for plugs and wires. This includes all Fluid Changes.

Car Drives beautifully except for when accelerating sometimes i get a slight hesitation or jerk. This is not the transmission slipping or the transmission at all I don't think. The RPMS stay the same and do not flare. If i really Hammer on it the hesitation or jerk is more pronounced and happens a little more. It is almost like it is gasping for air or something.

ANY IDEAS would be greatly appreciated.

1994 LS 400 w/K & N Air Filter

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Is your car jerking when at idle as well? If it doesn't, sitting in neutral, rev the engine and see if it jerks. Also, if it happens at a certain speed, you should consider cleaning your throttle body, and your fuel injection. Also, check your fuel filter. Sometimes they get clogged.

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