Rear tail light seals are prone to letting water in too! The car might just need drying out with a dehumidifier though. Yeah do the belt, water pump and tensioners together.
Finded the error...was a conponent broke on the ecu!! This civic just passed her MOT, all she needed to drive was done!! Now she is perfect !!! Ready for next 100 000 miles ^^ a rel pleasure to work on, and drive her!!