2000 Honda Civic

My 2000 Honda Civic, 4 cyl, 96000 miles was just in the shop for replacing the timing belt, water pump, O2 sensor, cv boot. Everything was repaired including replacing a trans axle. Have had it out of the shop about 5 days. Upon accelerating from a stop, the car seems to go into neutral. After a few seconds, it goes into its next gear (it's an automatic) and drives fine. Took it back to the mechanic and the car would not re-create the problem. Should I be concerned?
June 13, 2007.

I would be. However, the belt, water pump and O2 were not going to cause anything like this. The transaxle, if not properly installed or seated could cause problems.

Bruce Hunt
Jun 13, 2007.