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 gives answers to your general automotive questions. Special guest Tim Nelson from Virginia Auto Service. Also on this show:

• You can avoid many breakdowns just by staying on a regular schedule with your oil changes
• How far can I extend the time between oil changes?
• I hear that body shop work is expensive. Is there anyone you would recommend?
• How often should I get my tires checked?
• 2005 Monte Carlo: Have you ever heard of an Action Cycle Engine?
• 1989 Corvette : There's an intermittent vibration issue with the car. Would worn out bushings give me this oscillating like that on the A arms?
• 1993 Mustang: What could be causing a nox failure on my emissions test?
• 1998 Mercedes E320 50,000 miles: The car is running rough when it's cold and when I come to a stop it shakes. Do you have any idea what could be wrong?
• 2004 Chrysler Sebring: I'm having a problem with the acceleration and then it won't go beyond 65mph.
• 2004 Hyundai Sonata 30,000 miles: Is it okay to get my oil change at a car wash and detail place?
• 1999 Ford Taurus: My windshield wipers come on erratically and I'm not sure if there's something wrong with the computer or the wiring in the car?
• 1997 Jeep Wrangler 410,000 miles: I had the transmission rebuilt at 150,000 miles and I'm noticing that the lock up comes and goes at highway speeds and I'm wondering if this could be an electrical problem?

Cars talked about on this show are 2005 Monte Carlo, 1989 Corvette, 1993 Mustang, 1998 Mercedes E320, 2004 Chrysler Sebring, 2004 Hyundai Sonata, 1999 Ford Taurus, 1997 Jeep Wrangler.