Funky idling & hesitation at throttle.....sounds like it possibly could be a bad Mass Air Flow sensor. Is your check engine light on? Are you running a oil based air filter?
If this is the problem,do not buy it from the dealer. I've heard these things can run up to $550 at the dealer,$250 from
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-99' Zenith Blue 5-spd...didn't agree with a center divider on the freeway
-01' S Orient Red Metallic 6-spd...money pit...sold to buy a house