Car Overheating in Jamaica: Causes and What to Do on the Road

Jamaica's heat, traffic and hilly roads make overheating one of the most common breakdowns we deal with. Knowing what to do in the first few minutes can be the difference between a simple hose replacement and a ruined engine.

What to do the moment the gauge climbs

1. Switch off the AC. It adds load to the engine and heat to the radiator.

2. Turn the heater on full, with the fan on high. It feels uncomfortable, but it pulls heat away from the engine.

3. Pull over safely as soon as you can and switch off the engine if the gauge is in the red.

4. Do not open the radiator cap while the engine is hot. The coolant is under pressure and can cause serious burns.

5. Let the engine cool for at least 30 minutes before checking the coolant level in the overflow bottle.

Driving even a short distance with the gauge in the red can warp the cylinder head or blow the head gasket.

The usual suspects

• Low coolant from a leak: cracked hoses, a leaking radiator, a failing water pump or a loose clamp.

• Faulty thermostat: if it sticks closed, coolant can't flow to the radiator.

• Radiator fan not working: often noticed when the car overheats in traffic but is fine on the open road.

• Clogged radiator: old coolant, rust and debris block the small passages inside.

• Water pump failure: a worn bearing or broken impeller stops coolant circulating.

• Head gasket problems: often shown by white exhaust smoke, bubbling in the coolant bottle or coolant loss with no visible leak.

Signs your cooling system needs attention

• The temperature gauge sits higher than normal

• A sweet smell after driving

• Puddles of green, pink, orange or blue fluid under the car

• Steam from under the bonnet

• The coolant bottle keeps dropping

Why plain water isn't enough

Topping up with water in an emergency is fine, but running on water long term is not. Proper coolant raises the boiling point, protects against rust and keeps seals and the water pump lubricated. Use the type recommended for your vehicle.

Prevent it before it happens

Have the cooling system checked at every service. That means looking at hoses, clamps, the radiator, the fan, the coolant condition and level. Coolant also wears out, so follow your manufacturer's replacement interval.

Need help with this? RCJ Mobile Mechanics comes to you in Portmore, Spanish Town, Kingston, St. Andrew and across St. Catherine. Call or WhatsApp (658) 207-6565 or book a mechanic online.