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 diagnosing problems with your vehicle that tend to go away once you take your car into a shop. Also on this show:

• How a bad diagnosis can be more costly or harmful to your vehicle than doing nothing at all.
• Important information to give you repair shop regarding intermittent issues.
• How to find a pattern with a car problem that comes and goes.
• 2008 Nissan Frontier: I took my truck in for an oil change and to have it looked over before a road trip. The truck died on my drive home, so I took it back to the shop. They were able to fix the issue after a few days, and I haven’t had the problem since. Should I expect similar issues in the future?
• 2005 Ford F150: I have an intermittent issue with my fuel delivery system. Is there a shop you would recommend to have this looked at?
• 2013 Chevrolet Impala: My car hesitates to accelerate. Any idea what could be causing this in a vehicle of this age?
• 2008 Scion xB: My rear back shock is leaking fluid. Is this oil? Should I have this fixed immediately?
• Volkswagen Passat/Chevrolet Camaro: Since I own both a foreign car and an American car, what shop would you recommend to have each of them tuned up?
• 2004 Nissan Frontier: My truck is having an issue turning over. Is this a problem with the fuel pump? Is there a way to test it?

Cars talked about on this show are the 2008 Nissan Frontier, 2005 Ford F150, 2013 Chevrolet Impala, 2008 Scion xB, Volkswagen Passat, Chevrolet Camaro, and the 2004 Nissan Frontier.