Problems with idle, getting noticable in runability. Man I have a 97 Ford Taurus 3.0 and i'm having problems with the idle.....it's even noticable in the runability now. Replaced idle air control valve, sensor on the gas tank, spark plugs wire, coil pack, gas cap. Its my belief that its somewhere in the vacuum lines or air flow. Help!! Any suggestions. Its a great car besides this, and I could see riding this car till the wheels fall off if this issue was fixed.

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