hi, I have a 97 3.0CL, 98 Accord V6 and 04 Accord V6... great motors, some insights with combined 300k miles between them... problem with surging of engine on both 98's was like you revved between 1000 and about 2600 rpm? Happened sporadically at first then maybe two or three days, it remained constant...
thought it was one of the oxygen sensors, replaced them, engine lights went out, but surging continued... try replacing your MAP sensor, don't go to Acura, they want you to purchase an entire throttle body assy for $900 or so... NAPA... two screws (no pun intended), pull the plug and replay... solved my problems. net cost was about $60 if I recall. Hope that helps!
C