Like any other topic, people hold all kinds of mistaken beliefs about car problems and vehicle maintenance. And since this is my area of expertise, I frequently hear statements about cars that are, for lack of a better term, flat out wrong. Here is a countdown of my five current favorites:
5. “Can’t you just hook up the computer to find out what’s wrong?”
I usually hear this one when there is a symptom that occurs, oh, once every seven months or so. With few exceptions, the reality is that if the symptom isn’t evident at the time the technician is inspecting the vehicle, chances are good that everything the “computer” is reading will check out just fine. That is why I sometimes suggest leaving the car with your technician for a couple days so he/she will have a chance to drive it in an attempt to duplicate the problem.
4. “When putting on new tires, they always go on the front.”
20 years ago, I would have agreed with this statement. That’s around the time that front-wheel and all-wheel drive vehicles started to become popular. Even today, this subject can be debated for hours! In fact, the two schools of thought are so divided that even the Rubber Manufacturers Association (RMA) has no position on the matter! Me? I try to keep it simple. In my opinion, if you have a passenger car, you should put the new tires in the front. If you have a pick-up truck with little to no weight in the rear, then you should put them on the rear.
3. “Just follow the air pressure as listed on the side of the tire.”
False! You should always consult your owner’s manual for the recommended air pressure. Some manufacturers also put this information on the driver’s door jamb or inside the fuel access door.
2. “My battery must be fine because my lights and radio come on.”
This is not necessarily true, in that it takes a lot more current to turn the starter motor than it does to switch on a light or turn on a radio. Proper test equipment should be used to accurately evaluate the starting and charging system of any vehicle.
1. My favorite! “I want to get an alignment because I have a vibration around 55 mph.”
An alignment never has and never will solve a vibration problem. Vibrations are usually caused by tires or tire-related issues, such as balance, bent rims or out-of-round tires. Other causes could include worn suspension components or driveline issues, such as worn universal joints or a bent drive shaft. Alignments deal with the geometry of the vehicle, which affects tire wear and vehicle tracking.
What about you? Do you have any automotive fallacies that you found out are simply not true? Or is there something that you’ve heard about car problems or maintenance that you suspect might not be true? Let’s put these automobile urban legends to rest!