My '92 Integra has ~280K miles. A couple of years ago the tachometer started “bouncing” up and down while the engine seemed to run fine. Some time after, it started to hesitate under acceleration. A few months ago the car died while driving along the highway. The tachometer went up and down as the engine cut off and came back on before finally dying. A tow to the repair shop lead to a tune up, changing of spark plugs, wires, distributor cap and the ignition coil. That got the car running again, with its usual erratic tach and hesitation on acceleration. Then, the car died again in a similar way while driving. I was found to have a dead battery. Replacing it got the car running again…but the tach is still erratic and the car still hesitates. I am concerned that there is still some underlying issue that has not been fixed. I sometimes think it is a loose connection because there are times when the car seems just fine, but that is happening less frequently.