Engine cooling system faults

Coolant loss and high temperatures can point to a problem in the cooling system. The aim is to find out whether fluid is escaping, whether it is circulating properly and whether the system can get rid of the heat.

What the assessment can cover

Checks may look for leaks or establish whether the system holds pressure. The thermostat, pump, radiator and fan may be relevant, depending on when the problem happens. An engine that runs hot in traffic gives a useful clue, but that alone does not identify a faulty part.

After a severe overheating event

We may need to assess damage to the cylinder head as well as the original cause. If an overheating warning comes on while driving, stop as soon as it is safe and switch off. Leave the coolant cap closed while the engine is hot.

What helps us plan the checks

Tell us when the temperature rises, whether coolant has been lost and if any cooling system work was recently done. An existing report can help guide the diagnostic assessment.

Start by telling us about the fault

Open WhatsApp, review the suggested message and decide whether to send it.

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