newtohonda-tech

I recently replaced the engine in my 2000 Honda Accord. I sporadically drove it a few times before taking it out of town, and other than a slight burning smell the first few short drives (which the mechanic said was just oil burning off), it overheated and the engine has now shut down. The vehicle has been driven about 600 miles since it was repaired. It shut down in a different city than it was repaired in so we took it to the dealer and they said that it had the following problems:

1) it had an old/worn heater hose which blew out;
2) one of the temperature sensors blew out; and
3) the other temperature sensor is not connected.

Shortly, before the engine overheated and shut down, there was a small amount of fluid that appeared to be leaking from the vehicle, but it didn't appear to be (or smell like) oil or fuel and may have been mistaken (by my son who was driving) as condensation from the a/c. I hope the original mechanic doesn't try to get out of warranting the work and want to be as informed as possible when I talk to them so any thoughts on how this could have happened would be appreciated.