New to the boards .. and civic.

[zXeX]

Hey there guys. I just bought a 2000 Civic EX Coup today with 84K on the clock. Motor looks nice and clean, interior and exterior a dream. It only has one issue. At idle it surges some, lobs up and down within maybe 500 RPMs. It isn't real bad, doesn't die, but it is definitly noticeable. It has a CEL on, but I haven't been able to scan it. I purchased it anyways as normally these kind of issues are light and simple to fix. I don't mind spending a couple hundred more or so just to have a nice running/dependable car. I am just not familiar too much with the Honda 1.6 engine. I am suspecting maybe the EGR, TPS, AIC valve or some other emissions sensor/valve. What do you guys think?

Specs are as follows:

2000 Honda Civic EX
1.6, 5 speed tranny
84,000 on the clock.

Just bought, haven't scanned it and all yet, won't get time to do so for a bit.