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 talks about car radiators and overheating. Special guest includes Joel Bartko from Arizona Imports of Tempe, AZ. Also on this show:

• Plastic radiators: No corrosion and less weight.
• Water pump impellers.
• Do not drive an overheating car to the shop. Get it towed.
• 2004 Nissan Maxima. Slams into gear and drives in reverse. Check engine light on with U1000 code.
• 1996 Volvo. AC does not blow cold under 40 miles per hour.
• Never open a hot radiator or add cold water to it.
• 1998 BMW. What is the best anti-freeze coolant for my car?
• 2001 Nissan Frontier Pickup. Blinker make a clicking sound but lights do not flash.
• 2006 Toyota Tundra with 120,000 miles. Transmission has never been serviced. Do I need to do this?
• 1989 Chevrolet C30 Van. Temperature gauge is straight up. Is that okay?
• Why are coolant colors different? Are coolant change intervals determined by the color of the coolant?
• 2005 Yukon. Air conditioning blowing hot on the driver side. Actuator door problem.
• 2001 Chevrolet S10. Air conditioning is blowing hot. Why are the prices to get it repaired so different?

Cars talked about on this show are the 2004 Nissan Maxima, 1996 Volvo, 1998 BMW, 2001 Nissan Frontier, 2006 Toyota Tundra, 1989 Chevrolet Van, 2005 Yukon, and 2001 Chevrolet S10.