
Overheating can destroy your engine. We find the failure point and fix it fast.
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Overheating even once can cause catastrophic engine damage. Don't wait for a breakdown on the side of the highway.
If the needle is climbing past the midpoint or into the red zone, your cooling system is failing to regulate engine heat.
Green, orange, or pink fluid under your vehicle indicates a coolant leak from a hose, radiator, water pump, or gasket.
Visible steam or a sweet-smelling vapor means coolant is boiling off or spraying onto hot engine components. Pull over safely.
If the cabin heater stops producing heat, the coolant level may be low or the heater core could be clogged or leaking.
Having to add coolant frequently means there’s a leak somewhere in the system — external or internal (head gasket).
If the engine only overheats when stopped or in slow traffic, the cooling fan, fan clutch, or fan relay may have failed.
Houston's extreme summer heat puts enormous stress on your vehicle's cooling system. If your temperature gauge is climbing, your dashboard is showing a warning light, or you see coolant pooling under your car, you need immediate attention. At Ruben's Auto Repair & A/C Service, we diagnose and repair cooling system problems before they lead to catastrophic engine damage.
From radiator leaks and thermostat failures to water pump replacements and cooling fan issues, we handle every component in the cooling circuit. We pressure-test the system to find hidden leaks, check coolant condition and concentration, and ensure your thermostat and fans are operating correctly.
Ignoring an overheating problem — even once — can warp cylinder heads, blow head gaskets, or seize your engine. These are repairs that cost thousands. If your car is running hot in Houston traffic, pull over safely and call us. We’ll get you back on the road with a cooling system you can rely on.
Every component in the cooling circuit — from the radiator cap to the water pump — inspected and repaired.
Systematic testing to find the root cause: thermostat, fan, water pump, blockage, head gasket, or airflow issue.
Leak repair, core cleaning, and full radiator replacement for plastic-tank and all-aluminum radiators.
A stuck thermostat is one of the most common causes of overheating. We replace it and verify proper operating temperature.
Leaking or noisy water pump? We replace the pump, gasket, and (when applicable) the timing belt that drives it.
Electric fan motor, relay, and temperature switch testing. Fan clutch inspection and replacement for belt-driven systems.
Complete cooling system flush to remove old coolant, scale, and contaminants. Refilled with manufacturer-specified coolant.
Pressure testing and visual inspection to find leaks in hoses, clamps, the radiator, water pump, heater core, and gaskets.
Clogged or leaking heater core diagnosis. Includes dash removal when required for replacement.
Upper and lower radiator hoses, bypass hoses, and heater hoses. We check for soft spots, cracks, and swelling.
Combustion leak testing, compression testing, and block check to determine if a head gasket failure is causing overheating or coolant loss.
We’ve been diagnosing cooling system failures through Houston summers since 1993. We know what this heat does to cars.
Before and after repair, we pressure-test the system to find leaks other shops miss and verify the fix holds.
Most cooling system repairs — thermostats, hoses, water pumps, and flushes — can be completed the same day.
We’ll tell you exactly what failed and why. No guesswork, no replacing parts until something sticks.
Servicio completo en español. Si su carro se está sobrecalentando, llámenos — con gusto le ayudamos.
Located on Aldine Bender Rd, serving Aldine, Greenspoint, Humble, Spring, and all of North Houston.
It depends on how hot it got and for how long. A brief overheat may not cause lasting damage, but repeated or severe overheating can warp heads, damage gaskets, and score cylinder walls. We can test for internal damage with a compression test and combustion leak test.
Radiator replacement cost varies by vehicle. Some are straightforward bolt-in jobs; others require removing components for access. We’ll diagnose the leak, give you an exact quote, and only proceed with your approval. Call (832) 607-0968.
In an emergency, plain water will keep the engine cool temporarily. But water alone doesn’t protect against corrosion or freezing, and it lowers the boiling point of the coolant mix. The real question is why the coolant is low — there’s likely a leak that needs repair.
Most manufacturers recommend a coolant flush every 30,000 to 60,000 miles or every 3-5 years. Houston’s heat can degrade coolant faster. We test coolant pH and freeze-point protection to determine if it’s time.
At highway speed, airflow through the radiator helps cool the engine. At idle or in traffic, the cooling fan takes over. If the electric fan, fan relay, or fan temperature switch has failed, there’s no airflow at low speeds — and the engine overheats.
A cold heater usually means coolant isn’t flowing through the heater core. This can be caused by low coolant level, a stuck thermostat, a clogged heater core, or an air pocket in the system. We diagnose the specific cause and fix it.
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