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Flammable Refrigerants To Be Taken Care Of  Flammable refrigerants are illegal to use in an automotive air conditioning system. There are some exceptions, such as the new  R1234yf refrigerant , which is mildly flammable but only under certain conditions. Flammable refrigerants may also be used in the trailer refrigeration units on heavy duty trucks. But other than these, no flammable refrigerant should ever be used in a car or light truck A/C system. Flammable Refrigerant Fire Hazards Propane, butane and a number of other hydrocarbon mixtures and blends actually work quite well as refrigerants, with cooling characteristics similar to R-12, R-22 and R-134a. But if the evaporator inside the passenger compartment develops a leak, the flammable vapor may create a potential for a fire or explosion. Do you really want to risk being cremated while driving your vehicle? Another thought to keep in mind is what happens if your vehicle is involved in an accident. The A/C co...

R-1234yf Refrigerant For Your Car Auto makers are slowly moving toward a new refrigerant for automotive air conditioning systems. The new refrigerant is R-1234yf (HFO-1234yf), and it will be phased in slowly over time starting with some 2014 model year vehicles. R-1234yf has cooling properties that are similar to R-134a, which has been used as an automotive refrigerant since it was introduced back in 1994 to 1995 to replace R-12. R-134a contains no CFCs, which are harmful to the Earth’s protective ozone layer, but it does retain heat well and has a relatively high Global Warming Potential (GWP) rating of 1410. IMPACT ON GLOBAL WARMING Automotive refrigerants that leak out of A/C systems contribute very little to the overall global warming problem, only about 0.14% according to scientific estimates. Even so, when you multiply the millions of vehicles that are AC-equipped times even a small amount of refrigerant leakage over time, the numbers can add up. Some would argue ...

Alternative Refrigerants For Your Vehicle  As R-12 continues to disappear, the price of R-12 refrigerant continues to rise. So what do you recharge an older air conditioning system with if R-12 is unavailable? DROP-IN ALTERNATIVES FOR R-12 REFRIGERANT? Though a number of alternative refrigerants are marketed as "drop-in" replacements for R-12, there is really no such thing as a true drop-in replacement. The reason why is because Federal law prohibits the topping off A/C systems with ANY refrigerant that is chemically different from what is already in the system, unless all of the old refrigerant is first removed so the system can be converted to the alternative refrigerant. There are, however, a number of alternative refrigerants that can be used in older vehicles with R-12 A/C systems, and most have been reviewed and approved by the EPA for retrofitting older R-12 A/C systems. Approved refrigerants must meet the EPA's SNAP (Significant New Alternatives P...

 Car's Air Conditioner Recharge Procedure LOW REFRIGERANT If your air conditioner is not cooling well because the system is low on refrigerant, recharging the system with refrigerant should restore normal operation. This can usually be done with a few cans of refrigerant and a simple service hose connection. A/C RECHARGING PRECAUTIONS First, wear safety glasses to protect your eyes. Also avoid skin contact with refrigerant. The chilling effect of spilled refrigerant can cause instant frostbite on bare skin or eyes! WHAT TYPE OF REFRIGERANT? Next, you need to figure out what type of refrigerant your vehicle requires: On 1995 and newer passenger cars and light trucks, the correct refrigerant is R134a. DO NOT use any other type of refrigerant. On most 1994 and older passenger cars and light trucks, the original refrigerant was R12. R12 is no longer available to do-it-yourselfers and is very expensive. When older vehicles with R12 A/C systems need refrigerant, th...

Air Conditioning Repairs And Services A/C COOLING PROBLEM? The most likely cause of an automotive air conditioner cooling problem is no refrigerant in the system. If the refrigerant has escaped past a leaky compressor or O-ring seal, leaked out of a pinhole in the evaporator or condenser, or seeped out through a leaky hose, the leak needs to be identified and repaired before the system is recharged. On many systems, the compressor will not turn on if the refrigerant is low because the "low pressure safety switch" prevents the compressor clutch from engaging if system pressure is low. This protects the compressor from possible damage caused by a lack of lubrication. One of the first things you should check, therefore, is compressor engagement. If the compressors magnetic clutch is not engaging when the A/C is turned on, the problem may be a blown fuse or a wiring problem. If the fuse is blown, replacing it may restore cooling temporarily. But the underlying reason...

Auto Air Conditioner Blowing Warm Air, Not Cooling Is you car's air conditioner blowing warm air only and no cool air? Your A/C cooling problem could be caused by any of the following: Your A/C system may have lost its charge of refrigerant. This is probably the most common cause of a no cooling problem. Another possible cause of no cooling may be that your A/C compressor is not be engaging when you turn on the A/C. This can be caused by an electrical fault in the A/C compressor circuit or the magnetic clutch that drives the compressor. Another cause could be an internal obstruction inside the refrigerant circuit that is preventing refrigerant from circulating inside the A/C system. Another possibility might be a blend air door inside the HVAC unit that is stuck in the HEAT position and is preventing air from flowing through the A/C evaporator. Compressor Checks  Start with the compressor. Does it engage when you turn on the A/C? If so, the compressor is ...

Car's Air Conditioning System Inspection & Checking You should check your car's A/C system BEFORE hot weather arrives to make sure it is working properly and blowing cold air. The following tips on how to check your car's air conditioning system has been provided by the  Mobile Air Conditioning Society (MACS) : Note: Always be extremely careful any time you are under the hood while the engine is running. Stay away from all rotating components with your hands, clothing, and hair, and always wear eye protection around a running engine.  1. With the engine running, does the compressor clutch engage when the A/C is switched on? If it does not, this usually indicates a low (or empty) refrigerant condition, or an electrical problem. Also, listen for rapid clicking or cycling noises at the compressor when the A/C is switched on. If this is happening, it could also indicate low refrigerant or some other problems. Have it checked by your service technician. (Note: Some A/C...

Problem with 2004 Chevrolet Silverado 2500HD The power window switches, side view mirror controls and automatic door lock isn't working on the driver's side. The radio does not continue playing after the truck is shut off. there is not a warning "ding" when the key is left in the ignition. Look inside the rubber boot between and near the boot that goes from the door and the door jamb for broken wires all the circuits you are having a problem with are in there

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Problem with 2007 Toyota Yaris The offside door mirror has been knocked and now the electrics are playing up, so every time we switch the ignition on the complete mirror unit is powered and just performs a continuous ratcheting action. This can only be solved by holding the unit firm for a short period. Toyota say the only repair option is a new unit at $700! The glass adjusting motor still works as does the folding action. Sounds like the main motor mount pin is snapped. Unfortunately they are right, you will need to replace the mirror unit complete. That said, I wouldn't be paying $700. Ring around wreckers and get a 2nd hand one. You'll likely find one in the right color for your vehicle..

Problem with Network Software & Management Tools I had the same problem. I'm trying to install OS X MOUNTAIN LION in VMware Workstation 8.3 for Windows. In the end, when I try to run the virtual machine an error telling me that I have access denied for insufficient permissions. I'm already working as an administrator. Have click Run as administrator. I've tried changing the READ ONLY and the system allows not change. I believe not change by being in the mounted image. I think it must be some locking system that is not allowing. What can I do?? I'm waiting. Thank you very much. I've already changed NFS permissions and nothing

Problem with Harley Davidson FLHTCUI Electra Glide Ultra Classic Motorcycles Just had a set of Vance and Hines true duel pipes fited and a high flow HD air filter along with a retune using a screaming eagle race tuner problem is that now what sounds like the throttle position sensor is very noisy when i turn the ignition on ( sounds like it is going to full on and back to off ) , is this due to the retune , the lack of the original air filter back or is the position sensor on the way out . The bike seems to running ok starts well and definatly has more low to mid range power and the bonus of better fuel economy , the engine fault light and security light both go out after the prescribed 4 secs so there seems to be no faults , bike is a 2007 FLHTCU . Add your solution for this problem to help others