Cooling system diagnostics
Engine overheating is one of the few faults that can destroy an engine in a short period of operation.
Symptoms
- The temperature gauge climbs higher than usual, coolant level drops with no visible trace.
- The heater stopped warming, and the fan runs too often or not at all.
What's included
- Cooling-system diagnostics should therefore be performed at the first signs: the temperature gauge rises above its usual level, antifreeze level drops without visible traces, the heater stops warming, or the fan switches on too often or does not switch on at all. We pressure-test the system for leaks, assess the thermostat and fan, inspect the radiator, pump and hoses, and check whether exhaust gases are entering the system—an indication of a blown cylinder-head gasket. The result is a clear list of what needs to be corrected.
Additional checks
- Cooling-system tightness under pressure
- Thermostat and fan operation
- Condition of the radiator, pump and hoses
Why it matters
Overheating can put an engine out of action in a single trip, so diagnostics are worth doing at the first signs. A separate check looks for exhaust gases in the system — a sign of a blown head gasket.
More details
Engine overheating is one of the few faults capable of destroying an engine in a single trip. That's why the cooling system should be checked at the first signs: the temperature gauge reads higher than usual, the coolant level drops with no visible trace, the heater stops warming the cabin, or the fan switches on too often or not at all. We pressure-test the system for leaks, check the operation of the thermostat and fan, the condition of the radiator, water pump, and hoses, and also check whether exhaust gases are getting into the system — a sign of a blown head gasket. Based on the results we give you a clear list of what needs to be fixed.
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Describe the vehicle and symptoms, and we will suggest which check to start with.
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