Truck Coolant Systems Repair Services in Cumming, Iowa

Mechanic repairing coolant system of truck at Absolute Repair

Understanding what your coolant system is and how it works is helpful in being able to recognize when it is not working properly and that it may need maintenance or repair. One of the primary functions of coolant is to regulate heat within the cylinder head and engine block of your diesel engine. The coolant system is designed to circulate a cooling medium which absorbs heat from the engine and disperses it through a heat exchanger (i.e., a radiator or cooler). In the most basic terms, coolant picks up heat and transfers it to the radiator. Coolant is also used to protect against freezing and boiling, corrosion and pitting of cylinder liners and the diesel engine block. 

Equipment failure results when there is a break-down in the process of dissipating engine heat. If your coolant system is faulty, this will cause a rise in temperature in the engine.  Overheating can cause your engine pistons to expand, thus scraping the cylinders which cause damage to both components. This overheating can also cause wear and damage to your truck’s bearings and crankshaft. In extreme cases, you may even experience complete engine failure.

Common indicators of overheating

  • Broken thermostat
  • Blocked diesel injectors
  • Broken radiator hose
  • Coolant leaks
  • Steam or smoke is coming from the radiator cap
  • There is a noticeable smell of coolant
  • The truck’s temperature gauge shoots up

What can you do to help maintain your coolant system?

At Absolute Repair, we advise customers on industry best practices to maintain their coolant systems and prolong the life of their heavy-duty vehicles. Some of these practices can include: 

  • Ensuring the cooling system is filled with coolant and the freeze protection level is adequate
  • Using the same coolant already in the engine for top-ups
  • Checking radiator fluid levels and concentration
  • Properly cleaning and flush the system when coolant is changed
  • Checking the integrity of the radiator cap and looking for leaks

What Our Customers are saying About Us


While on vacation recently we unfortunately encountered a broken axle on our travel trailer. Being from out of town and the fact that it was a Sunday evening we had no idea who to call for repair. The tow truck driver recommended Absolute Repair and we were towed to that facility. The tow truck driver notified the owner of Absolute Repair that we were in their parking lot. On Monday morning we were greeted by Andrew who evaluated the situation. Peter (the owner) and Andrew were very easy to work with and kept us informed of their efforts to secure a new axle. Once they had the axle they worked quickly and diligently to put the new axle on the trailer and we were back on the road late Monday afternoon. Peter himself worked with another tech to complete the repair. Peter and Andrew are both very knowledgeable, explaining in detail the repair, as well as being concerned for our comfort and offering us the use of their lounge. The repair price was very reasonable. Andrew even placed a follow up call to us the next day to make sure everything was fine with the trailer. We cannot speak highly enough of this company and would recommend them to anyone without hesitation. Our sincere thanks to Peter and Andrew for assisting us and getting us back on the road so quickly.

Steve & Debbie Genoff
Google Review

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Get in touch with us today for service.

 We also offer mobile service within a 60-mile radius from our shop in Cumming, IA and service Des Moines, Urbandale, West Des Moines, and Osceola in addition to surrounding areas.