Bumper to Bumper Radio, the car guys on KTAR, 92.3 FM in Phoenix, AZ, broadcast every Saturday from 11:00 am to noon. On this show, Dave Riccio of Tri-City Transmission in Tempe, AZ and Matt Allen of Virginia Auto Service in Phoenix talk about the components of the air conditioning system in your car and how preventative maintenance and simple checks can keep it working at its peak level. Also on this show:

• Information about the relationship between your vehicle and the compressor.
• The 3 main working groups of your AC system.
• Components of your air conditioning that most commonly will fail.
• What does a heater control valve do?
• What notes you should be taking to your auto shop regarding an intermittent AC.
• Information about pressure switches and temperature sensors.
• Tips on how to park your car in the heat.
• 2004 Acura TL: Do I always have to use premium gas if that’s what I’ve been using?
• 2003 Cadillac DeVille: I was told my car has an internal transmission leak. What direction can you point me in to pass my emissions test especially?
• 2003 Nissan Xterra: How should I have my trucks catalytic converter issues properly diagnosed?
• 1968 Ford Mustang: The fan in my car locks up when I turn on my AC. Past replacing the water pump, what else could be causing this?
• 2006 Chrysler PT Cruiser: I’ve tried a list of things including having my transmission rebuilt to stop my car from overheating. Have you seen this problem with my make/model before?
• 1998 Mercury Grand Marquis: My cooling fan doesn’t seem to kick on when it’s over 105 degrees outside. How should I go about solving this problem?
• 2011 Honda Civic: How do I know whether it’s the fan or my resistors that are failing?

Cars talked about on this show are the 2004 Acura TL, 2003 Cadillac DeVille1968 Ford Mustang, 2006 Chrysler PT Cruiser, 1998 Mercury Grand Marquis, and the 2011 Honda Civic.