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 automobile air conditioning repair coupons. Are the low prices worth it? Special guest includes Aaron Nelson of Airpark Auto Service. Also on this show:

• The difference between checking your air conditioning and repairing it.
• Things that can go wrong with your air conditioning.
• Common air conditioning repairs.
• Air conditioning blowing cold, blowing warm, or not blowing at all.
• 1999 Chevrolet Tahoe. Check engine light came on and engine was shaky. Code said it was a cylinder 5 misfire. Replace spark plugs and spark plug wires.
• 1997 Dodge 1500. Mixed Dexcool with regular Prestone and radiator fluid got muddy. Flushed it out and have had problem with clogging and overheating. Steam came out recently, but could not find leaks.
• 2005 Ford F250. Has a hard cold start with smoke. It's fine when it's warm.
• 2004 Dodge RAM 1500. Condenser fan motor won't turn on when air conditioning is on. Had it replaced and it still won't come on.
• 2005 Ford F150. Feels like something is in the bed sliding around when I first take off.
• 2001 Buick Century. After car set for four months, my coolant light came on. Shop said oil was going into the coolant.
• 2002 Volkswagen Passat. Radiator was replaced. Now my air condition doesn't get cold. Freon is full.
• 2005 Nissan Murano. When I accelerate, the car jerks. Shop couldn't figure it out after having it for three days.

Cars talked about on this show are the 1999 Chevrolet Tahoe, 1999 Chevrolet Tahoe, 1997 Dodge 1500, 2005 Ford F250, 2004 Dodge RAM 1500, 2005 Ford F150, 2001 Buick Century, 2002 Volkswagen Passat, and the 2005 Nissan Murano.