[Baltothewolf]

So I was looking around to see if I could find d anyone with the 'surging and loss of power' like I'm having, and I ran across this guy. He literally has the same exact issue as me, down to the simple details. He ended up fixing it by replacing the upper o2 sensor and I'm kinda wondering if that might be my case as well, as it would explain the trouble getting into lean burn.

P/S. I'm at 199,779 and I'm fairly sure it's never been replaced.

(Other guy, not me):
My car is a manual 97 Honda Civic DX with 201000 miles and a 1.6L engine. For the last year or so, I have been experiencing a problem with the engine surging or losing power when driving in the city. At intermittent intervals with the accelerator held constant, the engine begins to bog down and surge, decreasing power and speed until the engine finally " catches" again, violently lurching the car forward. This problem is more common shortly after startup and seems to occur more commonly in 3rd or 4th gear between 25-45 MPH. The vehicle is also getting 20-30% worse gas mileage concurrently with the problem. If I were asked to picture the overall scenario, it seems as though the gas is building up in the engine, flooding it and bogging down the acceleration until the fuel is finally ignited and the car lurches forward.

In the past month, I have installed a new distributor cap with wires, new spark plugs, and had the timing belt changed. These new parts have not helped the problem concerned. The fuel filter was also replaced approximately 30K miles ago when the problem was first noticed, but this also did not eliminate the issue.