Vehicle diagnostics are the mechanics involved with identifying and assessing problems that may negatively affect the performance of a vehicle. We, at Smog Check Unlimited, have a wide range of techniques and tools in implementing vehicle diagnostics, ranging from visual physical checks to more involved, computer-based analysis. Given the occasional difficult nature of mechanical problems, effective & thorough diagnostics are critical to successful repairs and the smooth running of any vehicle.
Historically, effective vehicle diagnostics relied on the knowledge and talent of a mechanic, in his being able to use visual or audible clues to correctly evaluate a problem with your vehicle. Symptoms of mechanical problems can range from the obvious, such as a blown head gasket and a leaky radiator, to the indirect, such as and knocking sound. Prior to the integration of computer systems in vehicles, mechanics often had to have a comprehensive knowlede of your type of vehicle and have the talent to fix it.
With the invention of electronic control units (ECUs) in cars, and various types of vehicles, the task of diagnostics has become a more exact science. Through the use of our sophisticated equipment, our technicians can take advantage of computer technology to aid them in identifying and resolving mechanical problems. Virtually all modern vehicles now come with diagnostics (OBD) ports, which work with the ECU to monitor various sensors throughout the vehicle, and log codes when errors or problems happen.
Knowing what is wrong, of course is only half the solution. An experienced mechanic is still critical to fixing the problems with your vehicle. There are many mechanical problems that can occur without triggering an error log by the ECU. Vague rattles and other noises, inexplicable loss in fuel efficiency, and steering that pulls to one side or another are all examples of complaints that may not be picked up by the computer, but can be further investigated and successfully resolved by our skilled professionals.