In the past few weeks I have been noticing that intermittantly between 2000 and 3000 rpm during "loafing" acceleration my car is hesitating/slightly losing power. It doesnt seem to make a difference whether the car is hot or cold, it happens more often in 3rd gear (manual trans.). When I hammer the gas it does not do it. The plugs have around 60,000 on them...i believe they are platinum, the wires were replaced when the plugs were done. The car has 199,900 on it.