Heater won't blow hot air
Alright, here is the issue. A few months ago I hydrolocked my engine in a flash flood. It's a 1999 Honda Civic DX. Pulled plugs, got water out, got car to crank, drained oil, drained transmission fluid. Transmission fluid was fine so replaced, changed oil until was no longer milky looking. Only thing I had to do from there was replace the ECU because it had gotten wet and car was stuck in "limp mode". New ECU fixed the problem. After all of that the A/C would cut in and out but didn't really bother me because I never use the A/C. Winter is on it's way and my heater only blows cold air. A/C and heat worked fine before all of this. From the above information/history can anyone give me some places to start to fix the heater.