You back out of your driveway in the morning and it is a little cool in your car. You then turn on the heat, change the desired temperature from cold to hot and you hear a ratcheting type of noise. This noise occurs for a few seconds, then stops. The next few days, you go through the same routine and there is no noise. Then all of a sudden, you change the desired temperature and the noise is there again. What is causing this noise?
Noises can be a challenge to determine what exactly the cause is. Whenever you have a noise and you take your vehicle to your favorite mechanic he (or she) will ask you many questions in order to narrow their focus. Such as, is it cold or hot outside when you hear the noise? Is the car moving or sitting still? Do you hear it when making turns or going straight? What area of the car does the noise come from, the front, rear, right or left side, inside or outside? What kind of sound does it make? Can you describe the noise? In addition to asking these questions, one of our mechanics will go on a test drive of the vehicle with the customer. When we do this we have the greatest success in addressing the noise that the customer is concerned about. The most important thing here is if you hear a noise that wasn’t present before, you should have it checked out. After all, you wouldn’t want something simple and inexpensive to repair, turn into something more expensive.