'95 Honda Accord Revving Up/Dn

I own a '95 Honda Accord 4cyl with 123,000 miles and last month got a new timing belt & water pump from a reputable shop. Since then, and now getting worse either cold or hot, when accelerating from idle-to-45mph and beyond, the engine is revving up and down randomly with no obvious connection with the transmission (which has had no problems) gearing up and down which remains as smooth as it ever was at all speeds. While drivable for now, even the slightest acceleration will randomly trigger the revving with no other obvious audible issues. However, there is another repair issue where the A/C is dripping condensation on the carpet under the glove box. Are these issues related?