Phoenix Truck Repair

24 Hour Truck Repair 602-935-5233

Radiator and Cooling System Repairs


The radiator and cooling system is one of the most important components in a properly functioning semi truck engine. Engine coolant maintenance is just as important as a regular oil changes. As a diesel engine owner, you might be wondering if the cooling system in your truck works the same way as a cooling system in a standard gasoline engine.

These cooling systems operate generally the same, but the type of coolant and its condition in a diesel engine is more important than in a gasoline engine. One of the main reasons for radiator and cooling system neglect is the fact that semi truck drivers don’t understand how important it is to routinely checking the condition of the coolant, even though it should be a part of routine semi truck repair maintenance.

Semi Truck Radiator Repairs

Radiator leaks are often caused by cracked or ill-fitting hoses or can even come from a hole in the radiator. Radiators are typically made of aluminum, which is thin and easily damaged, making leaks a common occurrence.  However, the number one cause of coolant leaks is corrosion inside the radiator. And the number one cause of corrosion is a lack of regular maintenance such as coolant changes and regular radiator flushing. That’s why it’s so important to see your mobile truck repair mechanic on a regular basis.

Performing service and preventative maintenance on your truck’s air conditioning system is very important. Your truck’s A/C system will eventually wear out and need parts replaced and repaired with normal usage. Some of the more typical repairs are hoses and pipes leaking, and radiator tubes become clogged and can start leaking.  A/C problems will snowball and result in reduced cooling efficiency and will also hinder your truck’s ability to cool the engine. Regular maintenance and early identification of leaks in your truck’s A/C system can save you time and keep you operating at peak performance!

Indications your A/C system may be having issues:

  • A/C blows outside temp air
  • Blows air that smells musty 
  • Truck not warming up in cold weather
  • Defroster is slow or doesn’t work
  • Climate control only works when driving or stops working when truck is idling
  • Heater blows cold air
  • A/C blows warm air
  • No airflow, even with the fan set to high