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, Matt Allen of Virginia Auto Service in Phoenix, AZ talks about how to maintain your car's air conditioning with the summer months around the corner. Also on this show:

• Questions your auto repair shop will ask you if you think your AC isn't working optimally.
• Some common ways your vehicle's air conditioning may fail.
• Important information to bring to your auto repair shop for an AC service.
• Which components of your car or truck work together to cool your vehicle.
• 2011 Scion XB: My car is blowing warm air while at a stop. What could be causing this?
• 2008 Pontiac G6: My car is having trouble passing emissions after sitting for the majority of last year. Do you have any advice?
• 2010 Honda Insight: Why aren't the middle vents in my cabin blowing air?
• 2009 Dodge Charger: Why are my brakes are consistently squeaking even after numerous attempts to fix them?
• 1991 Geo Metro: I've just rebuilt the engine in this car but am struggling with the RPM levels. Is this a vacuum leak issue?

Cars talked about on this show are the 2011 Scion XB, 2008 Pontiac G6, 2010 Honda Insight, 2009 Dodge Charger, and the 1991 Geo Metro.