Why is my car overheating?
Overheating is almost always a cooling-system problem — low coolant, a failing water pump, a stuck thermostat, a leak, or a faulty radiator fan. Stop driving the moment the gauge climbs into the red: driving on hot warps the head and turns a cheap fix into a multi-thousand-dollar engine job.
The most common causes
A leak at a hose, the radiator or the water pump drops the level and the temperature climbs.
If the pump can't circulate coolant, the engine overheats — one of the jobs other mobile mechs decline, and our specialty.
A thermostat stuck closed blocks coolant flow and spikes the temperature.
If the fan doesn't kick in, the car overheats in traffic but cools on the move.
Hot in trafficIf it's been overheating a while, the head gasket may have let go.
Been hot a whileWhat it costs in Sydney
| Mobile diagnostic | $129 |
| Cooling system repairs | from $350 |
| Water pump (fitted) | from $449 |
Get it diagnosed — in your driveway.
Find the exact cause of the overheating and get a fixed price — before it becomes an engine job.
Common questions
No. Pull over and switch off as soon as the gauge climbs into the red — driving on hot is what warps the head and turns a cheap fix into an engine job.
It's a temporary patch at best. If it's losing coolant there's a leak — we find and fix the cause so it doesn't strand you again.
Most often a coolant leak, a failing water pump, a stuck thermostat or a dead radiator fan.