What Needs to Be Replaced in a Flood-Damaged Car?
2 Answers
Flood-damaged cars require replacement of the engine, bearing components, and all vehicle fluids. Below is the relevant information: 1. Engine: If the vehicle did not stall or was not started after water ingress, it is necessary to replace the engine oil and oil filter, air filter, and the sealing rings during the process of draining water from the engine components. If the vehicle stalled or was restarted, in addition to the aforementioned components, the engine connecting rods may also need to be replaced based on the situation, requiring an engine overhaul. 2. Bearing Components: If the water level reached the engine hood and the submersion time was relatively long, it is recommended to replace components with bearings. Otherwise, rust may lead to abnormal noises and damage later on, such as the generator, air conditioning compressor, and four-wheel vehicle bearings.
I often deal with the repair issues of flood-damaged vehicles. After being submerged, the core components of the vehicle must be replaced; otherwise, there will be endless troubles. For the engine, it's necessary to replace the engine oil, oil filter, and fuel filter, as water mixing into the engine oil can lead to lubrication failure, and in severe cases, the engine may be scrapped. The electrical system is the most troublesome—blown fuses need to be replaced, and wiring harnesses are highly likely to short-circuit due to moisture, so they must be entirely replaced to avoid fire risks. If the ECU module gets wet, it usually has to be scrapped and replaced to prevent continuous malfunctions. For the interior, carpets and seats soaked with water are prone to mold and odors, so new materials must be used to ensure air quality inside the car. Additionally, the air conditioning system needs to be cleaned, and the filter and evaporator should be replaced to prevent residual moisture. Transmission fluid and brake fluid must also be drained and replaced to protect critical systems. If the battery has been submerged, its lifespan drastically decreases, so it's best to replace it directly. After a flood, it's advisable to take the vehicle to a professional shop for a full inspection with testing equipment rather than attempting DIY repairs to avoid overlooking hidden hazards.
