Bmw Belt Tensioner

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Bmw Belt Tensioner
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The cooling system of your Volkswagen vehicle is an important part in order to keep your vehicle operating efficiently. The cooling system maintains the right temperature of your engine through the circulation of coolant through the engine that picks up heat and passing it through the radiator where it is cooled with air. The coolant in turn passes through a thermostat valve to control flow and through a temperature sensor which controls external air cooling fans.

Volkswagen vehicle cooling systems are comprised of three main parts and these are the VW water pump, VW hoses and VW thermostat, radiator and sensors.

Volkswagen Water Pump

The VW water pump handles the VW's cooling system's pumping function which keeps the coolant mixture moving. The basic VW water pump is gear or belt-driven there are also some cases in other cars wherein a secondary electric water pump is used to improved cooling and flow of the coolant mixture. One of the most important parts of the pump's operation is the drive belt which is also known on most new cars as the timing belt. However, on older car models, the pump and the belt are external and run off the main crankshaft pulley using a "V" of flat belt.

The maintenance of VW water pump is done simultaneous with the replacement of the coolant, the drive belt and tension adjustment (external type). The timing belt driven pumps should always be done when replacing the timing belt and tensioner.

Volkswagen Hoses

The VW cooling system involves various hoses which includes the Volkswagen radiator hose, control valves, the heater core and the expansion tank. And since these materials are constantly used and are exposed to heated coolant, these parts deteriorate easily and needs to be change more often.

The maintenance of cooling system piping consists of scheduled replacement of all hoses, replacement of coolant plus the replacement of any unplugged or leaking parts. It is a good idea to have all hoses checked at least twice a year to see whether there are abrasions, flexibility, cracks, and leakage. And of course it is vital that whenever coolant is flushed for replacement or even during engine repairs that hoses should be replaced. Radiator hoses, expansion tanks, heater cores, and control valves are commonly replaced due to leakage or plugging. However it is important that a VW professional should be the one contacted to assess the condition of these parts since they know everything there is to know about Volkswagen components.

Volkswagen Radiator, Thermostat and Sensors

Volkswagen's cooling system's temperature controls include all coolant temperature sensors, radiator or expansion tank cap, thermostat, cooling fan(s) and fan clutch. These cooling parts function independently of the engine but maintain the control over the engine cooling which is made by means of sending control signals to the VW's electronic systems.

The spring loaded valve that opens and closes based on the temperature of the coolant flowing through it is called the thermostat. You can tell that something is wrong with your thermostat when you see a high temperature reading is followed by a drop to normal temperature or a continuously low temperature---this normally indicates a sticking thermostat. Unfortunately, there are other conditions that caused these symptoms and if you are not sure what causing it then better have a VW professional mechanic to check it.

The radiator or expansion tank cap is similarly a spring loaded valve that reacts to system pressure. Its function is to maintain proper system coolant level at predetermined pressures. It should always be replaced with an exact replacement cap with the same pressure setting to obtain optimum function.

A belt-driven fan blade that pulls air through the radiator is usually included on the water pump pulley with a fan clutch to control it. The fan clutch functioned by allowing the fan to turn with the belt at low engine speed and shift to "free-wheel" at higher speeds. A damage fan clutch should not be taken for granted since it may cause your vehicle to overheat.

An electric fan that can function by itself or with an auxiliary mechanical fan is usually equipped for front-wheel-drive Volkswagen. These two types of fans are controlled via a temperature sensor that is found on the radiator specifically on the upper radiator hose or on the thermostat or water pump housing. This sensor is usually an on/off type switch with a fixed temperature setting.

The other common temperature sensors that are found on Volkswagen vehicles include: gauge sender, warning light sender, lambda and/or fuel injection sensor/s and the thermo-time switch. Controlling the engine temperature is critical to obtain high performance and emission control. But unfortunately it is also the system that is one of the most difficult to fix getting a VW professional is highly advised.

On the other hand maintenance of your cooling system sensors is a no sweat task since there is nothing to maintain in the first place, all you have to do is to keep them clean internally and externally. Likewise, checking and replacing all parts at the set factory-recommended time or mileage limit also help to maintain the good running condition of your VW car.

Any information in your Volkswagen radiator hose [http://www.dubautoparts.com/volkswagen-radiator-hose.html] needs try to search your online resources.

Growing up with three brothers, Natalie Anderson became exposed early to the world of automobiles. This 29-year-old account manager now dreams of having her very own top-of-the-line vintage car.

Mercedes Glk: Sport/utility With a Purpose

Mercedes took advantage of being the last automaker to show their new vehicles on Wednesday’s Press Day, by wrapping three of them in Christmas presents and unveiling them one by one.

The first, and the most important gift was the official introduction of the Mercedes GLK, the automaker’s all-new, small sport/utility vehicle. Handsome, with chiseled lines and a boxy look, the GLK may seem out of place during these days of avoiding all things SUV. Mercedes indicated as much, but stressed that the GLK is the perfect transition vehicle from the big SUV that their competitors sell (think Cadillac Escalade) to something that is smaller and more responsible.

The 2010 Mercedes GLK will begin to arrive in dealer showrooms this December, but become available to customers in January. Offered in both two and four wheel drive, the base two wheel model will retail for $33,900 while the 4MATIC version will start at $35,900. Mercedes said that when these prices were announced to their dealer group, everyone broke out in applause. In better days, price wouldn’t have mattered, but those days have since passed by and dealers know that customers are looking for value.

Mercedes has stressed that the GLK is not a smaller version of the GL rather that the vehicle is an original design sitting on its own platform. The GLK seats five passengers who benefit from its three-point inertia-reel seatbelt technology which includes electronically controlled belt tensioners that tighten up in the split second before an accident occurs.

Side impact airbags are standard, essentially a curtain that descends between the A and C pillars to protect front and rear passengers. Anti-lock brakes, brake assist, adaptive braking, electronic stability control, and traction control is standard on every GLK model.

Inside, Mercedes added the usual luxury touches to the GLK and some sensible ones too. The top of the dashboard is black, which reduces glare, while the rest of the dash, center stack and glove box are of the interior color chosen by the customer. Air vents and controls blend into the upper part of the dash as does the instrument panel.

The center stack holds controls for the climate and audio systems as well as control for other systems including the heated seats. MP3 connectivity is found inside of the glove box where a power socket and plug is located. A 7 inch display, what Mercedes calls COMAND navigation, features a map of all of North America with turning instructions included when called upon for directions.

Under the hood, it is V6 power only for the GLK. A 24 valve 3.5L V6 engine that produces 268 horsepower with 258 lb.-feet of torque is paired with Mercedes’ seven-speed automatic transmission. Together, these components provide exceptional power and just the right fuel economy for a vehicle in its class.

I liked the looks of the GLK and can see where it’ll give Acura, Lexus, Infiniti, BMW, and Volvo a run for its money. As far as the other two gifts go, they were limited production cars including a $299,000 AMG model that will see only 350 produced in 2009. As for me, I’d go with the GLK if I was looking for an entry level luxury sport/utility vehicle something Mercedes hopes car buyers will do in abundance in 2009.

About the Author

Matthew C. Keegan is a freelance writer who resides in Cary, North Carolina. Matt is a contributing writer for Andy's Auto Sport an aftermarket supplier of quality parts including custom arm bars and axle pivot bushings.

How do you replace the belts on a 99 bmw 323i?

My belts popped on my car this weekend. The belts are now completely off but it is hard to put them back on. Does anyone have a diagram on how to put them back on? By the way when the belt popped my battery light came on, the car started to overheat and the steering became tough. Is that normal when that happens on a BMW? Please help!!!!! The tensioner was loosen to try and apply the new belts.

The 323 comes with one serpentine belt that runs all the above.

Changing the belt is a frickin' nightmare. The tensioner is supposed to loosen 'quiet easily' if you have a correct tool, which most 323's seem to be missing from the little tool kit on the trunk lid, plus you might need to remove the radiator cowl and fan (!) to reach all the parts.

Go to the first link, and save the diagram (hopefully in color) - Print it out and laminate it if you must. The pattern of the belt is very important, and if you also have a/c, you will need to remove that belt before placing the main belt on.

http://www.bimmerwerkz.com/forum/3-series-e36/1992-325i-serpentine-belt-problems-59093.html

This link has some decent photos, though I tend to think that either my car is out to drive me insane (pun intended), or it really is that easy:

http://www.pelicanparts.com/bmw/techarticles/E36-Belt-Replacement/E36-Belt-Replacement.htm

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