Mobile Cooling System Repair in Boerne, TX

Cooling System Repair in Boerne

The long climbs on IH-10 between San Antonio and Boerne, plus towing and summer heat, put more load on a cooling system than flat city driving. If your temperature gauge creeps up on the grade or your truck overheats with a trailer behind it, the cooling system needs a look before it strands you on the shoulder.

What We Test

We pressure-test the system to find leaks, check the radiator for plastic tank cracks and blocked fins, test the thermostat and fan operation, inspect hoses and the water pump for seepage, and check the coolant itself. Mixing incompatible coolant types can leave sludge, so we confirm the correct type for your vehicle.

Signs to Catch Before the Grade

Cooling problems usually give warning: a sweet smell after a drive, a puddle under the front of the truck, a reservoir that keeps going low, or a gauge that sits higher than it used to on the climb. Steam from under the hood or a needle in the red means pull over and shut the engine off. Driving an overheating engine even a few miles can warp a cylinder head and turn a hose job into an engine repair.

Plastic Parts and Years of Heat

Many radiators have plastic end tanks, and many engines use plastic thermostat housings and coolant fittings. Years of heat cycles make that plastic brittle, and it cracks at the seams or at a hose neck. We check those parts by hand and with a pressure tester, because a hairline crack often leaks only when the system is hot and under pressure.

Refilling and Bleeding the System

After a radiator, hose, thermostat or water pump replacement, the system has to be filled with the right coolant and bled of air. Trapped air causes overheating that looks like the repair did not work. We bleed it using the procedure for your engine, run it to operating temperature with the heater on, and recheck level and pressure before leaving.

Cost

Starting at $199 (thermostat) to $449 (radiator). Repairs happen at your home or ranch, written estimate first.

Prices, warranty and the full checklist for this job: Radiator & Cooling System in San Antonio.