AUTONET TV

What is a TPS? (Throttle Position Sensor)

You know you have an accelerator pedal; step on it and your vehicle is supposed to go.  But did you know there is a part in your vehicle that keeps track of where the throttle is? It's called the Throttle Position Sensor, or TPS.

The TPS is a sensor that helps your vehicle figure out the right mix of air and fuel is reaching your engine.  It does that by keeping track of the throttle and sending that information to your vehicle's computer.  Other factors play a role in how well your engine is performing, including air temperature, how fast the engine is turning over and air flow. 

When the TPS isn't working right, you may find your vehicle won't accelerate or doesn't have the power you're expecting when you press on the accelerator.  In some cases, it may accelerate on its own.  Sometimes your vehicle won't go over a certain speed.  Your Check Engine light may go on.

Any of these symptoms should be checked out soon.  If your TPS stops working right, your vehicle may not be safe to drive.  Fortunately, most vehicles have a "limp home" mode that will allow you to get off a busy road to a safe spot. 

Your service advisor can let you know which TPS is the correct replacement for your vehicle.  Your shop may have to re-program the new TPS so it works correctly with other software in your vehicle.

It's a fact of life these days that computers control many of a vehicle's functions. The sensors that feed information to those computers help make your vehicle work the way it was engineered to and keep you motoring down the road safely and efficiently.

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

'Tis the Season (Tires)

We all know about winter tires.  But did you know there is such a thing as summer tires?

Most people have all-season tires on their vehicles.  They work pretty well in a variety of weather conditions.  But if you want better handling and performance, you might consider switching to summer tires.  Here are a few things you should know about them.

Summer tires are good for high-performance vehicles like sports cars and luxury SUVs, but they don't have to be limited to those. They have a different tread pattern than all-season tires, with generally shallower grooves and more rubber that contacts the road.  The rubber is made of a stickier compound good for taking corners at higher speeds.  Plus it is engineered so it stays firmer the hotter the temperature gets. 

Here's a bonus.  That design also works well in warm, wet weather.  It makes sense, since more the more rubber that's touching the concrete or asphalt when it's slippery out, the better the traction. 

There are some things to be aware of with summer tires.  They often have asymmetrical or unidirectional tread patterns.  That sometimes limits the way these tires can be rotated on a vehicle.  Another thing to remember is it is NOT a good idea to use summer tires in any wintery conditions.  They lose traction as the temperature heads toward the freezing range and below since that rubber that's designed to stay firm at warm temperatures gets hard as a rock when they freeze.

But in warmer weather, summer tires can increase your braking and cornering capabilities.  Plus you'll notice more grip at faster speeds and higher temperatures than all-season tires.  So think about discussing summer tires with your service advisor to see if they'd be a good fit for the type of driving you do.  He or she will offer you some choices that are designed to meet your vehicle's specs.

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

Is Your Princeton Driving Severe?

People near Princeton, NJ, often ask KPS Princeton Garage how often they should have a particular service done. It's a great thing to ask. You can look at your owner's manual or have your Princeton, NJ, service advisor at KPS Princeton Garage look up your vehicle in a service database. What you find is often a surprise to people – there are actually two service schedules.

One is the regular schedule and the other is the severe service schedule. Service intervals are shorter on the severe service schedule. When asked, most folks in Princeton will say that their driving is normal and that the 'regular' schedule probably applies to them. 'Severe service' sounds pretty extreme – 'I don't drive like that.'

Well, here is what the manufacturers say constitutes severe driving conditions; you can draw your own conclusions.

• Most of your trips are less than four miles (six and a half kilometers).
• Most of your trips are less than ten miles (16 km) and outside temperatures are below freezing.
• The engine is at low speed most of the time – not on the highway. You operate your vehicle in dusty areas.
• You regularly tow a trailer or carry heavy loads.
• You drive with a car-top carrier.
• You do a lot of stop-and-go driving.
• You drive in very hot or very cold weather.

If that's severe driving, what constitutes regular driving? Well, it would look something like this: I live somewhere with moderate temperatures all year round – I'm thinking San Diego here. And I live close to a freeway on-ramp. Everywhere I need to go is right off the freeway, at least four miles (six and a half km) from my home. I can drive at a steady 60 miles per hour (100 kph) when I'm on the freeway.

I don't know about you, but that doesn't sound like my normal driving. It sounds more like ideal conditions. I live where it gets hot in the summer and cold in the winter. I run short errands around Princeton. Occasionally we load up for family trips.

For me, normal driving includes elements of severe service driving. So here's what I tell people: think about how you drive, where you live, where you go and what you are expecting to with your vehicle in the near future.

Picture a line with 'regular' on one end and 'severe' on the other, and make a judgment on where you fall. If your regular oil change recommendation is 5,000 miles (8,000 km) and the severe service recommendation is 3,000 miles (5,000 km), when should you change your oil? For me, it's closer to 3,000 miles (5,000 km). For my wife, it's closer to 5,000 miles (8,000 km). Your Princeton, NJ, auto service advisor at KPS Princeton Garage will be happy to have this discussion with you and help you sort it out.

Just a quick word on why severe service intervals are shorter. One has to do with heat. That can either be external heat from the weather, engine and transmission heat from stop-and-go driving or working extra hard moving heavy loads or towing. The heat causes the fluids like oil and transmission fluid to break down more quickly, and then they aren't as effective.

Another factor is water. Moisture naturally collects in fluids as they cool. In your motor oil, for example, if you don't drive long enough for the oil to fully heat up, the water won't evaporate. Water in the oil can lead to the buildup of damaging sludge.

If you live where the air is dusty or polluted, fluids will become contaminated and filters will get dirtier more quickly.

So make an honest evaluation of your driving conditions. You've made the commitment to take care of your vehicles, so it only makes sense to follow the right schedule.

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

Technician Training at KPS Princeton Garage

Your vehicle is important to you, and keeping it running properly is important to your lifestyle. That's why you're smart enough to have it serviced regularly at KPS Princeton Garage in Princeton. And even though it may just be routine maintenance, you want it done right by automotive professionals.

It's also very important to your Princeton service center to keep you happy and on the road. You might be surprised at the amount of money our Princeton auto service center spends annually to make sure our friendly and knowledgeable technicians are properly trained.

KPS Princeton Garage offers a variety of automotive services for many kinds of vehicles. We need to be current on the latest techniques and parts so that we can give you quality service. Our Princeton service centers subscribe to data services that list the high quality parts and fluids recommended by your manufacturer.

And each service has a checklist of standard procedures. KPS Princeton Garage technicians follow these procedures so they can safely deliver a consistent level of high-quality service.

Some services at KPS Princeton Garage require the use of specialized equipment. KPS Princeton Garage technicians are trained extensively on this equipment so that they can service your car quickly and efficiently.

Classroom, video and hands-on training is provided by the company and outside trainers. It's not only important that friendly and knowledgeable technicians be able to perform a given task, they also need to be thoroughly trained in inspection and diagnostic techniques. One of the great services they perform is to detect potential problems before they become serious.

The automotive service industry has standards for classifying and communicating problems. For example, it's one thing to learn that your manufacturer recommends that you change your serpentine belt every 30,000 miles/48,000 km and another to learn that the belt is on the verge of failure. These standards help you understand the urgency of recommendations, letting you make better automotive service decisions.

NJ folks may be interested to know that service technicians (including those at KPS Princeton Garage) are trained in compliance with federal and local Princeton laws and regulations, including environmental regulations regarding the disposal of used parts and fluids.

It's the goal of KPS Princeton Garage to provide fast, courteous service. You should feel free to ask your friendly and knowledgeable technician or one of the managers about your service or for more information about their recommendations.

At KPS Princeton Garage, well-trained service providers, established procedures, industry standards and, of course, great people, combine to give you the best auto service in Princeton.

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