On board computers and diagnostic computers have made diagnosis and repair of vehicles more efficient and less costly. If you don’t believe me, consider the fact in recent years many shops that used to charge a higher rate for diagnostics than actual repair labor have ceased that practice. Plugging a diagnostic computer into a car is a lot like running an MRI or an X-Ray on a person: you get a quick and exact picture of the symptoms of your patient.

For many repairs, this computer is more than what you need. For some repairs, a diagnostic computer in the hands of of someone who doesn’t understand what they’re working with can be a nightmare. Let’s look at a common sensor issue that causes a check engine light to come on: an oxygen sensor. If your oxygen sensor fails, you definitely need to replace it. But there are other issues that can cause a false positive on an oxygen, or O2 sensor. The main false positive happens if you aren’t getting enough fuel pressure to the engine. If this is the cause, you could either need a new fuel line (if you do, I recommend Gates Submersible Fuel Line Hos or Gates Barricade hoses) or a new fuel pump/fuel sending unit. Not getting enough fuel pressure can cause the O2 sensor to read “lean” and out of acceptable range. So, if this happens, and you go to an auto parts store, get a free diagnosis, and you still get the error after you reset the code, what happens? You’re out the money for the sensor, since you can’t return installed electronics (“we don’t sell parts for diagnosis” – even though they diagnosed you!) and you still have to figure out exactly what’s going on.

If you’re competent at repair diagnosis yourself, you might not need a mechanic. But if you’re not sure, you should definitely pay someone else to work on your vehicle. You don’t always need to take it to the dealership – though they do fine work. You don’t only have to utilize the mechanic just down the road – though he might be the best in town. In that case, use him.

Rather than finding a convenient mechanic, find the best in your area. An experienced mechanic that is good at diagnosing can save you hundreds on each repair and help you keep your vehicle on the road for a long, long time.

If you’ve had your vehicle competently diagnosed and you need an engine gas or diesel for a car or light truck, please, give our sales staff at call at 901-266-9996.

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