Expert Radiator Repair & Replacement in Salt Lake City
Coolant leak or engine running hot? We find the leak and repair or replace your radiator, from the team that treats you like family.




Complete Radiator Service & Repair
Radiator service involves the inspection, repair, and replacement of the cooling system components that keep your engine at a safe operating temperature, including the radiator, hoses, thermostat, and water pump. At J-Mac Complete Car Care, we combine pressure testing with hands-on mechanical expertise to stop leaks and protect your engine from costly overheating damage.
Signs Your Radiator Needs Professional Service
Cooling system issues can escalate quickly if left unaddressed. If you notice any of these 4 warning signs, book an inspection immediately:
Engine Running Hot
A temperature gauge creeping toward the red is the clearest sign your cooling system isn't keeping up.
Coolant Leaks
Green, orange, or pink puddles under your car point to a cracked radiator, failed hose, or bad gasket.
Steam from the Hood
White steam or a sweet smell while driving means coolant is escaping and your engine is at risk.
Low Coolant Levels
If you're topping off the reservoir often, there's a leak somewhere in the system that needs to be found.

Built to Last, Backed By Our 2-Year / 24,000-Mile Warranty
We stand behind our radiator work. That means full coverage on parts and labor for your peace of mind. If something isn't right, we make it right.
Our Radiator Repair Process
The Precision Diagnostic
We pressure-test the cooling system to pinpoint leaks, weak hoses, and failing components.
The Digital Inspection
We text you photos and videos of the worn components so you see exactly what we see.
Quality Craftsmanship
We use premium parts and the correct coolant specifications to ensure a factory-quality repair.
The Multi-Point Final Check
We perform a full warm-up and road test on State Street to verify proper flow, pressure, and fan operation.
What Our Customers Say
The J-Mac Advantage
Comfortable Waiting Area
Free Wi-Fi & Coffee while you wait.
Shuttle Service
We’ll get you back to work or home (local area).
Financing Available
Easy payment plans for peace of mind.
Night Drop
Secure after-hours key drop for your convenience.
Related Services
Conveniently Located in South Salt Lake
Located on State Street, just south of 33rd South. Easy access from I-15 for Salt Lake, Murray, and Millcreek drivers.
Radiator Repair FAQs
What does a radiator do?
The radiator keeps your engine from overheating by dissipating heat. It circulates coolant through the engine to absorb heat, then releases it through the radiator to maintain a safe operating temperature.
How does the cooling system work?
Coolant circulates through the engine to absorb heat, then flows to the radiator where it's cooled before cycling back through. This process regulates engine temperature and prevents overheating.
What are the main components of the cooling system?
The key components are the radiator, water pump, thermostat, hoses, cooling fan, and coolant. Each part works together to control engine temperature and keep your vehicle running safely.
How do I know if my radiator is bad?
Common signs include overheating, coolant leaks, low coolant levels, discolored fluid, or visible damage. If your engine is running hotter than normal, have it checked right away.
Why is my car overheating?
Overheating can be caused by low coolant, a failing radiator, a bad thermostat, water pump issues, or cooling fan problems. It's important to address it quickly to avoid engine damage.
Why is coolant leaking under my car?
Coolant leaks are often caused by cracked hoses, a damaged radiator, loose connections, or worn seals. Even small leaks can lead to overheating if not repaired.
Why do I see steam coming from under the hood?
Steam usually means coolant is leaking or boiling over from overheating. Stop driving and have your vehicle inspected immediately.
Why does my temperature gauge keep rising?
A rising temperature gauge means your engine is running hotter than it should, often due to low coolant, restricted flow, or failing cooling system components.
How often should coolant be changed or flushed?
Coolant should typically be replaced every 30,000–60,000 miles, depending on your vehicle and driving conditions. Regular service prevents buildup and keeps your cooling system working properly.
What causes a radiator to fail?
Radiators can fail from corrosion, age, leaks, clogged passages, or damage from road debris. Lack of maintenance also shortens its lifespan.
How long does radiator replacement take?
Most radiator replacements take a few hours to a full day, depending on the vehicle and parts availability.
How much does it cost to fix a coolant leak?
It depends on where the coolant is escaping. A cracked hose or a loose connection is a smaller repair than a damaged radiator. We pressure-test the cooling system to find the leak first and give you a clear estimate before any work is done. The repair is covered by our 2-Year / 24,000-Mile Warranty on parts and labor.
Can I drive with a bad radiator?
It's not recommended. Driving with a bad radiator can cause overheating and serious engine damage. Have it repaired as soon as possible.
How do you diagnose radiator or cooling system problems?
We pressure-test the cooling system to pinpoint leaks, weak hoses and failing components, and check the radiator, thermostat and water pump. That tells us whether the radiator can be repaired or needs to be replaced, and you get a clear estimate before any work starts.
Will you check hoses, thermostat, and water pump?
Yes. We inspect the entire cooling system — hoses, thermostat, water pump, and related components — to confirm everything is working properly and prevent future issues.
Do you repair semi truck and heavy-duty radiators?
Yes. Heavy-duty cooling has been a J-Mac specialty since 1972. We repair and replace semi truck radiators, charge air coolers, and industrial cooling systems for commercial trucks, fleets, and diesel rigs at our shop on S State St in Salt Lake City. Call (801) 843-6295 for a heavy-duty radiator quote.
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