Cool But Not Cold ~ Warm but not Hot

The method used to warm a car’s cabin isn’t a whole lot different from the one used to keep its engine cool. In fact, it’s all hooked together and runs on the same circuit. Coolant circulates through the engine and absorbs engine heat, which is exchanged with the outside air by way of the radiator. A much smaller radiator called the heater core uses the same hot coolant to keep the cabin toasty.

Troubleshooting Air Conditioner Issues
If the air conditioning is set to max cool and fans on high, but is only blowing moderately cool air:

  • Check to see that the cooling fans on the condenser or radiator are running when the air conditioning is on.
  • Look for any restrictions like leaves, bugs or dirt that would keep air from passing over the condenser.
  • Check the cabin air filter to ensure that it is not clogged.

Check the pressures in the system using a manifold gauge set. The recommended high-side and low-side pressures can be found in the repair manual.

These are a few common causes of problems with your cooling system components:

  1. A Freon leak caused by a failed o-ring, seal, hose or component.
  2. A clogged expansion tube or refrigerant charging hose.
  3. Failed compressor or compressor clutch.
  4. Failed blower motor or blower motor resistor.
  5. Damaged or failed condenser or evaporator.

These are a few common causes of problems with your heating system components:

  1. Low Coolant Level.
  2. Worn out Thermostat.
  3. Build-Up or Sediment causing blockage for coolant.
  4. Air filter needs replacing.
  5. Heater Core issues.

Compressor
When diagnosing a heating / cooling issue, it’s easiest to begin at the compressor.

If there is no voltage – a cycling switch may be bad, a fuse may be blown and the system may not have enough refrigerant pressure to trip the low pressure cutoff switch that cycles the compressor.

Detecting Leaks
Leaks are the most common problem associated with the air conditioning system.

If pressure is low, then there may be a leak. Taking the time to make sure your car’s heating and air conditioning are working optimally can guarantee the best performance and comfort over the long term.

If you would like some assistance detecting and isolating the issue for Heating / Cooling System Repair, please contact any one of our four full service auto repair and tire stores located in Reno and Sparks, NV.

Sierra Car Care and MST Tire Center Locations

3180 Mill Street, Suite A, Reno, NV 89502
(775)329-6434

190 W. Plumb Lane, Reno, NV 89509
(775) 825-1185

1300 W. 7th Street, Reno, NV 89503
(775) 747-1345

1101 California Avenue, Reno, NV 89509
(775) 348-7508

Our certified technicians at Sierra Car Care are equipped to complete a full range of auto repairs to keep your car in top running condition. Our skilled auto repair technicians are trained to repair most vehicles. We pride ourselves on providing preventative maintenance Reno, NV auto repair services including oil changes, brake replacement and many other Reno, NV auto repair services at affordable prices.

For auto repair and tires give us a call at (775) 525-2420 or contact us online to get a free quote. Feel free to stop by our tire and auto repair shop located in Reno, Nevada.

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