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, AZ talk about ways to ensure your vehicle passes emissions testing. Also on this show:

• Percentages of emission failures and common reasons why.
• How the VEI program has cleaned up the air in recent years.
• Why having your check engine light on will cause you to fail emissions.
• Information about ozone pollution in Arizona.
• 1991 Cadillac Coupe DeVille: My right blinker only blinks about every 30 seconds while engaged. The left side seems fine- does this have to do with the turn signal switch?
• 2011 Chevrolet Silverado: I’m hoping to get more volume out my exhaust- how does that affect my truck while trying to pass emissions?
• 2005 Ford Excursion: My check engine light came on recently. Is there a shop you would recommend to work on diesel vehicles?
• 2007 Honda Fit: My vehicle recently failed emissions. The code says this has something to do with my fuel system, but even after spending over $1k in replacement parts my engine light is still coming on. What should my next step be?
• 1997 GMC 1500: During the hotter months, my oil pressure gets low while idling. What should I do to solve this problem?
• 2006 Chevrolet 2500: My diesel truck has its engine light on. Will this still cause my truck to fail emissions?
• 2008 Ford Taurus: I have a really bad brake-wobble at higher speeds. What is causing this?

Cars talked about on this show are the 1991 Cadillac Coupe DeVille, 2011 Chevrolet Silverado, 2005 Ford Excursion, 2007 Honda Fit, 1997 GMC 1500, 2008 Ford Taurus.