Coolant System Repairin Ontario, CA.

A temperature gauge running higher than normal, coolant puddles or white crust on hoses and the radiator, a sweet smell, steam from under the hood, a low coolant warning and heater output that comes and goes are common signs. Stop and have it checked before the engine overheats.

Heavy loads and hot Inland Empire summers push the cooling system hard. A partly clogged radiator, a weak water pump, a sticking thermostat, a failing fan clutch or low coolant can all hold up on flat ground and then overheat under load.

Coolant can leak onto hot parts and burn off, or leak internally through an EGR cooler, oil cooler or head gasket. We pressure test the system and check the oil and exhaust to find where it is going.

It pressurizes the system to normal operating pressure with the engine off so we can find leaks in the radiator, hoses, water pump and connections, and it tests the radiator cap so the system holds pressure.

Topping off gets you home, but if the level keeps dropping there is a leak. Mixing the wrong coolant types can also reduce protection, so we check the type and condition of your coolant.

Hoses, clamps and thermostats are often same day. Radiators and water pumps depend on parts availability. We give you a time estimate after diagnosis.

We work on light, medium and heavy duty diesel trucks, fleet vehicles, trailers and RVs, including Freightliner, International, Peterbilt, Kenworth, Volvo, Mack, Hino, Isuzu, Ford Power Stroke, Ram Cummins and GM Duramax.

It depends on the truck, the parts and what we find. We diagnose first, then explain the repair options and the price before any work begins, so there are no surprises. Call, text or use the form to get started.

Calling ahead is best so we can plan bay time and parts. If your truck is down, call (909) 701-8755 and we will tell you the fastest way to get it in.