Hey everyone,

I've been having an issue for the past month or so where my engine will surge from about 1500 to 2000 rpm back and forth under gentle acceleration or going up hills. It goes away when I apply more or less pressure to the throttle. It does not surge at idle when the ac is off. I don't believe it is related to the ac because it does it when it is on or off. I installed new spark plugs/wires and replaced the trans fluid 10k miles ago. 210,000 miles, original engine, transmission was replaced with a low miles one from the scrapyard at 170ish when I bought the car.

Thanks,
Christian