Tech Tip: Erratic 4Runner Blower Motor
Some Toyota 4Runner owners may complain of a condition where the blower motor speed does not match the HVAC display indication.
A/C Update: The Future of Cool
Editor Ed Sunkin returns from the Mobile Air Conditioning Society Worldwide trade show and convention in February, 2009, with details on the possible future of the U.S. refrigerant segment of the industry — HFO-1234yf. This refrigerant provides a very low global warming potential and many new service and sales opportunities.
BMW Climate Control Diagnostics: Resolving Any Cooling System Problems First Speeds Repairs
First Speeds Repairs There was a time when the heating and ventilation system on most cars was simple. A three-position switch, a couple of levers and maybe some separate vents that would allow outside air to enter the passenger compartment. Times have changed and today’s car buying public wants to dial in a desired temperature
Tech Tip: Cabin Air Filters Keep Heater, Air Conditioner and Defroster Operating Properly
Cabin air filters prevent leaves, dirt, bugs and other debris from entering the HVAC (Heat Ventilation and Air Conditioning) system. This prevents the fan and control doors from becoming jammed with debris that could cause fan noise or affect the operation of the heater, air conditioner and defroster. Keeping the HVAC system clean also helps reduce the growth of odor-causing mold and other microbes on the A/C evaporator ….
Tech Tip: Wintertime Heater Operation Guidelines
Wintertime heater operation presents numerous questions and problems. Here are some guidelines for professional technicians to ensure the heating efficiency of their customers’ vehicles when the weather turns cold. Verify coolant level and condition. If the system is low, the heater core is the first to lose coolant flow, causing a lack of heat in the passenger compartment. Old coolant can cause ….
Servicing Solutions: 15 Tips on Servicing Ford F-150s
A bold new look and some subtle changes probably best describe the 2004-and-up Ford F-150. To the technician, it is the subtle changes that he or she needs to be aware of. Beginning with the 2004 model year, Ford launched a new body style for the F-150. It is a new vehicle inside and out.
Cabin Air Filter Q & A
Question: How do you replace a cabin air filter? Answer: First you have to find it. The cabin air filter is usually located behind the glove box or at the base of the windshield in the cowl area over the HVAC inlet duct. The exact location can be found in the vehicle owner’s manual or
Spring Service:The Do’s and Don’ts of A/C Repair
As vehicle owners in many parts of the country begin using their air conditioning systems for the first time this year, some will be surprised to find their A/C system is not functioning properly or isn’t blowing out cold air like the summer past. The following is a recap of common A/C system problems, followed
Spring Service: Do’s and Don’ts in A/C Repair
As vehicle owners in many parts of the country begin using their air conditioning systems for the first time this year, some will be surprised to find their A/C system is not functioning properly or isn’t blowing out cold air like the summer past. The following is a recap of common A/C system problems, followed
Leak Detection: Tooling Up for Leak Detection
Leaks of one kind or another can always be a challenge to find if the leak isn’t obvious. Having the right tools to help you find leaks can save time, effort and reduce the risk of comebacks. So here are some common types of leaks and what kind of equipment you can use to find
A/C Update: Troubleshooting Smells
If your customer complains to you that his or her vehicles’ air conditioner blows out air that smells like the inside of old gym sneaker when the A/C is turned on, they are not alone. Literally. The cause – microbes that getting a free ride while growing on the A/C evaporator. Molds like damp, dark
Directions: Techs Offer Feedback on Proposed A/C Refrigerant Ban
The following comments regarding the proposed ban on the sale of automotive refrigerant to consumers (see page 32 of the May issue of Underhood Service) were e-mailed to me in the past few weeks. Most of the comments were directed toward Tom Brown and the coalition opposing such legislation. Note: Comments below may have been