The LT adds 16-inch aluminum wheels, air conditioning, power mirrors, floor mats, power windows with driver's auto-down, sport cloth seats, CD/MP3 stereo, anti-lock brakes, touring suspension, and power locks with keyless entry. Air conditioning, curtain airbags and anti-lock brakes can be added as options. Trim lines are the LS, LT and SS, all of them in sedan or coupe configuration.įeatures on the LS include 15-inch steel wheels, manual remote mirrors, variable intermittent wipers, driver information centre, tilt column, cloth seats, 60/40 split-folding rear seat with pass-through, CD stereo with auxiliary input, and automatic headlamps. The 2.2-litre comes with a five-speed manual or optional four-speed automatic, while the SS comes solely with a short-throw five-speed manual. An SS sedan model is now available, along with the return of the SS coupe, as well as a new XFE model, with reduced fuel consumption due to a new 3.63 final drive ratio with the manual transmission and new 15-inch low-rolling-resistance tires, for an improvement of up to 13 per cent in the city and eight per cent on the highway, achieving 8.0 L/100 km in the city and 5.4 L/100 km on the highway.Īvailable as a two-door coupe or four-door sedan, the Cobalt uses a 2.2-litre in the LS and LT trim lines, and a turbocharged 2.0-litre four-cylinder in the SS models. The 2.2-litre Ecotec four-cylinder gains variable valve timing, raising horsepower from the previous 148 hp to 155 hp. Exterior colours: Silver Ice, Gold Mist and Silver Moss added Cashmere discontinuedįor 2009, the Chevrolet Cobalt undergoes several changes, including performance and fuel enhancements. OnStar standard on SS, available on LS and LT Reconfigurable performance display added to SS Coupe Worn bushings and brushes can add enough current draw to overload the resistor.- More efficient and powerful 2.2-litre engine with variable valve timing If the fan still works on high speed and isn’t noisy or slow, the issue won’t be obvious. Probably the most common reason, though, is excessive current being drawn from the fan motor. The two that I commonly see are corrosion from condensation or water leaks, and overheating because of restricted airflow due to a blocked cabin filter or debris ingested into the system. There are several things that tend to kill blower resistors. (Older designs used metal coils for the same purpose.) Fortunately for you, this style is usually less expensive to replace. Each resistor reduces the voltage available to the fan by a different amount. Every speed has its own circuit from the switch, and all but high speed goes to - and through - resistors mounted to a ceramic board that’s cooled by air from the blower. The second way of providing fan speeds is resistance, and, as you note, that is what’s used in your Cobalt. Electronic speed controls for blower fans typically have a sizable aluminum heat-sink to keep them cool. While it once was only used for fans in automatic HVAC systems, it’s now common in manual systems, too. The longer it is “on” relative to “off,” the higher that average. Pulse-width modulation is a fancy way of saying that the circuit is switched on and off quickly, reducing its average voltage. There are several different types of blower resistors used in vehicles, but they control fan speeds in one of two ways either what’s known as pulse-width modulation or through resistance. Why does it go bad, and can I do anything to prevent it? I’ve replaced the resistor for the speeds once already, and it’s failed again. Right now, the heater fan only works on high speed, and it’s annoying. I have a 2009 Chevy Cobalt that I use mostly for commuting from home to the local GO station.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |