Tag Archives: #lawrencevilleautoservice

Time for Differential Service at Global Auto Solutions?

Hello Lawrenceville – let’s talk differentials. If you have a rear-wheel drive vehicle, your differential is on the back axle. With front-wheel drive cars, the differential is up front. All-wheel drive and 4-wheel drive vehicles have three differentials – front, rear and in the middle. So you see, you’ve got a differential (or two or three) and it needs service now and then.

What does your vehicle differential do? Well, it compensates for the differences in speed between your outer and inner wheels in a turn. Using the dimensions of a typical car, let’s compare the distance the wheels travel from the start of a turn through to the completion of the turn.

The inside wheel travels about 12.6 feet/3.8 meters. How much farther does the outside wheel travel? About 18.8 feet/5.7 meters – over 6 feet/1.9 meters more. This means the outer tire has to rotate 9 times in the same amount of time that the inner tire has to rotate only 6 times – so the outer tire has to spin faster in order to keep up. The differential makes this possible.

The gears in the differential are cooled and lubricated by differential fluid. It’s this fluid that needs to be serviced. Small bits of the gears break off and are suspended in the differential fluid. The dirtier the fluid, the faster the gears wear.

So your Global Auto Solutions technician drains the old fluid out and replaces it with fresh fluid. Some differentials also need a special additive that is put in at this time.

So when should you have your vehicle differential serviced? Intervals vary from vehicle to vehicle – and may be as short as 15,000 miles/24,000 km – so check your vehicle owner’s manual or ask us at Global Auto Solutions. If you frequently drive with heavy loads, tow a trailer or drive in hot GA conditions, you may need to change differential fluid more often. Servicing your differential on schedule at Global Auto Solutions can save a pricey replacement down the road.

Give us a call.

Global Auto Solutions
2710 Lawrenceville Highway
Lawrenceville, GA 30044
770.931.0222

Check Engine Light ? What’s That ?

Okay. You went to your local Lawrenceville car wash, and while your vehicle was under the dryer, the Check Engine light started flashing. Panic! What did you just do? Is something seriously wrong with the vehicle? Perhaps the Check Engine light stops flashing or it  just glows red. Hmm. Maybe things aren’t as bad as they seem. You decide to wait until payday to take your vehicle in to get serviced. In the meantime, the Check Engine light goes off  again. What? Maybe when it comes on it doesn’t mean anything, or maybe it’s just in your vehicle as some sort of scam to get you to pay for unnecessary repairs. Maybe or maybe not,however , don’t disregard a check engne light.

 
What possibly happened at the carwash….

Whoa! Let’s look at what really happened. Your vehicle was under an air dryer. Your air intake sensor measured too much air running through the engine. It sent its report to the engine computer, where a warning was triggered; there shouldn’t be that much airflow when the vehicle engine is idling. This is a serious problem that could cause permanent engine damage. Warning! The Check Engine light starts flashing, letting you know you need to take immediate action to prevent that damage.

You drive out from under the dryer, and the air intake sensor sends a new message to the computer. The computer realizes that everything is normal and tells the Check Engine light to stop flashing. The vehicle doesn’t need immediate attention; but there was a problem, and it should be checked out.After a few days the computer senses that the problem is gone, so it turns off the warning light.

Have questions abut your vehicle? Ask your Global Auto Solutions service advisor.

You may think this story illustrates the uselessness of a Check Engine light, but you should remember that a computer can’t think for itself; it can only follow its programming. It doesn’t know the difference between a car wash air dryer and a serious malfunction in your vehicle engine. That doesn’t make it useless. It just means you have to be the smart one.

Being smart doesn’t mean ignoring your vehicle Check Engine light. It lets you know when something is wrong, and you can prevent a lot of damage to your vehicle by paying proper attention to it.

Your engine computer is constantly collecting data about what is going on inside your vehicle engine. It knows what parameters are normal and when a reading may indicate a problem. It uses the Check Engine light to let you know when something isn’t right. It then stores a code in its memory — which a technician can retrieve — that indicates which reading was abnormal.

The technician uses this code as a starting place to find out what’s wrong with your vehicle. It’s like going to the doctor with a fever. The fever is the reading that is abnormal — your temperature is too high — but the doctor still has to figure out what’s causing it. It’s probably an infection, but what kind? Sinus infection? Appendicitis? Flu? The problems and their solutions are quite different. But a fever also tells a doctor what’s NOT wrong with you. Fevers don’t accompany stress headaches, ulcers or arthritis, so there’s no sense in testing for those conditions.

The pros at Global Auto Solutions respond to a trouble code in your vehicle’s computer in the same way. The code doesn’t say exactly what’s wrong, but it does give the technician a good indication of where to start looking —and where he/she doesn’t need to look.

Now, you wouldn’t consider diagnosing yourself with a serious medical problem — good medical advice unless you’re a doctor. So you shouldn’t consider trying to diagnose your vehicle’s troubles by yourself — good auto advice unless you’re a trained mechanic.

There are cheap scanners available on the market, and some Lawrenceville auto parts stores provide read trouble codes from your vehicle engine’s  computer for you. But these are really not good alternatives to taking your vehicle to a qualified service center such as Global Auto Solutions in Lawrenceville. Your engine’s computer has both short-term and long-term memory, and there are some codes that are specific to a particular make of vehicle. Cheap scanners can’t read an engine computer’s long-term memory nor can they interpret manufacturer-specific codes. That’s why our manager at Global Auto Solutions spends a lot of money on high-end diagnostic tools.

It’s as if you had a choice between a doctor who had a tongue depressor and a thermometer and one who had all the latest medical diagnostic equipment on hand. Honestly, which would you choose?

Getting your codes read at your Lawrenceville area auto parts store isn’t really a money-saver, either, unless you’re a trained mechanic. You’ll end up with a code that tells you a symptom. What usually happens next is that the Lawrenceville area parts store sells you something that directly relates to the symptom. It may or may not fix the problem. It’s actually cheaper to just go to Global Auto Solutions and get things fixed right the first time.

Remember, a fever can indicate a sinus infection or appendicitis. An antibiotic may be okay for that sinus infection, but it likely won’t help your appendicitis. Is it really wise to wait around to see if the antibiotic helps when you might have appendicitis?

Part of good vehicle care is knowing where you can get a problem fixed — and fixed right. Preventive maintenance goes a long way to keeping you out of the repair shop, but eventually, we will all have a problem that needs fixing. Let’s schedule an appointment or visit us at Global Auto Solutions in Lawrenceville, Ga , you’ll be glad you did.

Global Auto Solutions
2710 Lawrenceville Highway
Lawrenceville, GA 30044
770.931.0222