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Fri 8am-3pm
1600 6th St. SW, Cedar Rapids, IA
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Cooling System Repair

Your cooling system has a vital job in your vehicle to keep the engine from overheating. If your vehicle's engine temperature gets too high it overheats, there's likely an issue with your cooling system (also known as a radiator). If your engine overheats, it's best to pull over to let it cool down, and give Big Jim's Automotive a call.

There are several types of car radiator repair that may be necessary, from radiator flush to replacement. When you bring your vehicle to us, we'll find the root cause of the issue and help keep your engine cool!

Potential Cooling System Problems

  • Coolant Leak
  • Coolant Mixture
  • Dirty Coolant
  • Thermostat

Coolant Leak

If the engine is overheating and your coolant level is low, it's likely that your cooling system has a leak. You might even notice the coolant leak on your driveway or anywhere you park, or it might leak while you're driving. Newer radiators often have plastic caps, and if the cap cracks, this will cause a leak. At Big Jim's Automotive, one of our mechanics can test the radiator for a leak by doing a pressure test with colored dye.

Coolant Mixture

This system's coolant is made up of a mixture of water or antifreeze and coolant. The coolant is vital to keeping the engine from overheating, so if you notice this happening, it might be the coolant mixture. Depending on your car, the radiator coolant may be housed near other fluids, like the transmission fluid.  In this case, a radiator failure could cause the wrong fluids to mix. Certain makes and models require a specific ratio, but we take care of all types of vehicles! We even specialize in European models, such as Volkswagen and BMW.

Dirty Coolant

If your cooling system or engine has any internal rust, it may flake off into the fluid and cause a sludge to begin to form. This sludge can prevent the coolant from flowing freely and doing its job to cool the engine. A coolant flush will relieve the system from this grime and prevent further damage to your engine. However, it's best to find the source of the rust to prevent contamination of the new coolant.  We can help with that, too!


The engine has a thermostat that's attached to a gauge on your dashboard. If the coolant in the engine is too hot, the gauge will show it.  If your engine temperature warning light turns on, it's a good idea to turn the car off and let the engine cool down. You may think you have a problem with your cooling system due to overheating, but it might be your engine's thermostat. If the temperature gets stuck in one place without changing, the thermostat might be faulty. If you think that's the problem, it's important to get the thermostat checked to ensure your engine doesn't overheat.

When you come to Big Jim's Automotive for car cooling system repairs, you can be sure the service you get will be honest and fair. We will get to the bottom of whatever the problem is you're having with your car or truck. We want you to understand the issues we've found and what we want to do to fix your vehicle.