AUTONET TV

Go With the Flow (MAF Sensor Replacement)

A driver brought her vehicle into the shop the other day and told us how she was getting lousy fuel economy and that the engine was running rough.  Plus, the Check Engine light was on.  Our technician checked the code the engine had generated (why the Check Engine light was on) and found the problem.  It was a faulty Mass Air Flow sensor, MAF sensor for short.

This MAF sensor is an important part of your vehicle.  What it does is calculate the amount of air going into your engine.  As you may know, air is taken into your engine where it's mixed with fuel.  Then, the spark plugs fire, that explosive fuel/air mixture detonates, and all these sequential explosions together provide the power to get your vehicle moving down the road. 

It makes sense that if the MAF sensor isn't sending the engine's computers the correct information on the amount of air going in the engine, the fuel/air mixture isn't going to be right. It will either too rich (too much gasoline for the amount of air) or too lean (not enough gasoline for the amount of air).

In this driver's case, the MAF sensor was damaged and needed to be replaced.  Another thing that may cause the MAF to give an incorrect reading is if its wires are dirty or faulty.  So, replacing or cleaning the wires important as well.

Other symptoms that your MAF sensor is bad? If your engine hesitates when you step on the gas, it stalls, or your vehicle is jerky when you accelerate. 

A malfunctioning MAF sensor is not just bad for performance.  Driving with your vehicle in that condition can cause more damage to your engine.  When you bring your vehicle in for us to check, a technician will thoroughly examine your engine to make sure all issues are taken care of.

KPS Princeton Garage
3860 NJ-27
Princeton, NJ 08540
732-297-9515

Light Up your Life (Headlamp Replacement)

Did you know that having a burned out headlight can result in your rearview mirror reflecting some flashing lights? In other words, you might get pulled over by the police for only having one working headlight, because in most places it's against the law. 

Not only is it illegal to drive with one headlight burned out, but it's also dangerous. You can't see down the road nearly as well at night with only one headlight, and other drivers can't see you as easily either.

The good news is many newer vehicles warn you when one of your headlamps burns out. When that happens, have it taken care of as soon as you can.  While there was a time when all headlamps were pretty much the same, the same isn't true these days. There are halogen, Xenon, LED and other technologies used in modern vehicles.  Plus there are sealed beams (like those on older vehicles) and capsules.

If you have a burned out headlamp, ask your service advisor for recommendations.  Usually when one side goes, the other isn’t far behind. Many suggest replacing both headlamps at the same time.  Your vehicle's owner's manual can tell you what the manufacturer recommends.  You also can ask your service advisor about upgrading to a headlight that might give you better visibility. 

In order to make sure you're able to see down the road the way your vehicle was designed and not blind oncoming drivers, it's vital that new headlights be aimed properly.  That's another good reason to have this service performed by a technician. Now, that's a really bright idea.

KPS Princeton Garage
3860 NJ-27
Princeton, NJ 08540
732-297-9515