Jeep Tech Tip: Poor A/C Performance
Some Jeep Liberty and Nitro owners may complain that A/C performance is poor and that the A/C is not cooling enough or fails to keep the passenger compartment cool. This update will provide customers with improved A/C performance.
Gaskets: Ignoring And Top Off Troubles
Engine oil and coolant leaks should not be ignored. Topping off the levels is often more costly in the long run than repairing the leaking gasket or component. Advising a customer about the potential damage that can occur if they decline a leak repair is not a scare tactic, it is important that they know the real price of their decision.
Do Cabin Air Filters Help Winter Breathing Problems?
When some people think about cabin air filters, they conjure up images of summertime, air conditioning and musty smells. The reality is that cabin air filters work the majority of their magic when temperatures drop and cause winter breathing problems.
GM: Eliminating Air Conditioning Odor
Models: 2014 and prior GM passenger cars and trucks Some customers may comment about musty odors emitted from the HVAC system at startup in hot, humid conditions. Cause This condition may be caused by condensate buildup on the evaporator core, which doesn’t evaporate by itself in high humidity conditions. The odor may be the result
R-1234yf Safety Procedure Checklist
Remember that R-1234yf is only mildly flammable. To become flammable, the mixture of air and refrigerant in a closed area like a vehicle cabin would need to be between 6.5% and 12.3% of the chemical vapor. This mixture must then experience a significant amount of energy to ignite it. In some lab tests, a spark
Refrigerant Revolution: What R-1234yf Means for Service, Equipment, Safety
The new R-1234yf refrigerant is more than just a new jumble of numbers and letters on a label. For your shop, R-1234yf means several new procedures, a certification and new equipment in order to properly handle these new systems. Why the difference in handling and servicing R-1234yf systems versus R-134a? The reason is flammability. Don’t
Case Study: 1996 GMC 1500 with no temperature control
• No A/C, no vent control, no temperature control • A/C and recirculation buttons will not light up • All new components, including compressor and control head Cars with a little age on them can be temperamental when diagnosing what might seem at first to be an easy problem. This 1996 GMC had already gone
A/C Oil Service: Avoid Compressor Failure With Proper Maintenance
HVAC systems often fail because the air conditioning compressor fails. Not following the proper service procedures or compressor oil recommendations could be factors that contribute to premature compressor failure. Refrigerant Since the mid-‘90s, all vehicles have been using R-134a refrigerant, but soon, vehicles will arrive at your shop equipped with R-1234yf refrigerant. This is the
Saturn HVAC Performance Issue: Noise Concern
Condition Some customers may comment that the vehicle’s A/C is not cooling or is not cold enough and/or the A/C compressor is noisy. Correction Do not replace the A/C compressor. For concerns of A/C system noisy during slow parking lot maneuvers, replace the HVAC hose with suction line (P/N 20757021 or aftermarket equivalent). For concerns of A/C
Tech Tip: How to Properly Install an Orifice Tube
This Tech Tip is presented by our friends at the Mobile Air Conditioning Society. Installing an Orifice Tube properly is an important part of general A/C maintenance. Steve Schaeber explains how to install the Orifice Tube in relation to refrigerant flow, the reason for its design and the tool needed for removal. [computer] Please enable
HVAC Sensors: More Than Just Temperature
When a driver sets a temperature in the control head of an HVAC system, what does it mean to the vehicle? Seventy-two degrees could mean many different settings depending on the outside temperature, humidity and even the position of the sun. When a passenger decides that 70 degrees is a better temperature for their zone,