Oil is an important part of the A/C system. Refrigerant charged oil circulates through the system while keeping 60-70% of the oil in the compressor at all times. This provides adequate lubrication to reduce friction (heat) and wear (metal particles that will cause premature compressor failure and clog condenser passages). When doing a compressor job, it is always advisable when removing the old compressor to drain the oil to see what sort of condition the system is in, and to see how much oil is inside the compressor. This will also help to determine if there is any oil left in the system or if the compressor failure was due to low refrigerant oil.
Never assume a compressor comes with correct amount of oil in it.
The parallel flow condenser is by far the most efficient condenser to use with R134a refrigerant. The multi-channel construction and multiple passes the refrigerant makes through the condenser allows maximum heat transfer. The smaller tubes and wide surface area allows the most refrigerant to come in contact with air flowing through the condenser fins.
The reasons for this efficiency is also one of its major drawbacks. These small tubes that efficiently transfer heat are so small that they trap any contamination in the system that tries to pass through them. Flushing will not remove the contamination from the condenser. This contamination will create a restriction in the condenser and make the high side pressures go up. This forces the compressor to work harder and possibly fail. Contamination in the condenser can also work itself free and end up at the compressor where it will also cause a failure.
Freezing temperatures reduce visibility, impede friction on the road and lower your vehicle’s performance. It is a terrible period for every driver. However, if you have been wondering how you can get your car ready for winter, you’re in luck. We have all the right tricks and tips to ensure that the next cold season is not all doom and gloom.
We have all faced nerve-wracking situations when the temperatures drop. Sometimes your car may get stuck and fail to make it up the hill or just refuse to start in the morning when you’re getting ready to go to work. With a little pre-planning though, you can kiss such scenarios goodbye.
Here are a few areas to which you should pay attention.
1. Is the cold bad for car batteries?
Although high temperatures will take a bigger toll on your car [...]
Finding fluid leaking from your car can be alarming. Some leaks are normal, but most are not. Having the leaks repaired promptly can prevent costly damage to your car’s engine and transmission.
Checking Your Car For Leaks
Unless your car has a catastrophic failure of one of its systems, most leaks will start small. If you suspect you have a car leaking fluid, you can perform an easy check in the following way. Park your car on a level surface. Put a few paper towels on top of a couple of sheets of newspaper and slide them under the engine area.
After an hour or so, pull out the paper and see if there are any drips. Carefully note the color of the drips and if there is any distinct odor. This will help our mechanics get a [...]
In many parts of the country the winter weather is not only chilly, but also harmful to your car. From the wheels to the windshield, Mac’s Automotive Service & Radiator Repair has the low down on ways the cold affects your vehicle and how to prevent it.
Four Ways Cold Can Damage Your Car
Windshield and Wiper Damage
Ice, rocks, and salt do a number on your windshield and wipers during the cold season. Modern windshields are durable, but may still crack when mistreated. Never wash your car with hot water in winter, even if you are trying to remove ice from the glass. Use the proper coolant and winter windshield wiper fluid for cleaning. If you are expecting ice or sleet, leave the wiper blades up or even remove them so they don’t freeze [...]
“Should I warm up my car engine before driving off?” This question is common among drivers across America. For Pacific Northwest dwellers, it comes up every winter. During this period, balmy temperatures turn cold and there’s a flurry of rain storms. So, keeping one’s car running at top condition becomes a concern. Yet, warming up a car does more harm than good.
3 Reasons You Should NOT Warm Up Your Car’s Engine When It’s Cold You waste gas.
The average Joe checks gas prices on a regular basis hoping to fill up for less. Thus, it’s important to understand that warming up a car wastes this precious liquid. How? Idling a car in low temperatures causes more fuel to flow into the engine. As a consequence, you use extra gas versus getting into your car [...]
Radiator design has changed over the years, and recently there’s been a trend towards using radiators made mostly from plastic instead of metal. While plastic radiators are definitely cheaper to produce and install than their metal counterparts, they should probably ultimately be replaced. Here are just a few reasons why.
Why You Should Replace Your Plastic Radiator
The biggest reason to use a metal radiator instead of a plastic model is because it will extend the life of the product. When a vehicle’s thermostat opens, coolant that is heated to temperatures up to 200 degrees rushes into the radiator tank. This happens constantly when your vehicle is running, and this exposure to such a high temperature can cause a plastic radiator to crack. Once a plastic radiator is cracked, it needs to be replaced. The aluminium core that rests within most plastic radiators is a little more durable, but even that isn’t as effective as [...]
Keep pollen out of your vehicle is an important goal for any allergy suffers. This year airborne tree pollen is everywhere. The powdery green stuff wreaks havoc with those who are allergic to it, but it can also make a mess of your car, both inside and out.
3 Tips to Protect your Car from Pollen
Here are a few tips to hopefully help you breathe easier, and to protect yourself and your car from pollen.
Clean your Cabin Air Filter
Most cars built since around the year 2000 have an air filter for the interior that can screen out not just pollen and other airborne pollutants. Cabin filters also prevent your heater core and air conditioner from becoming clogged, thereby reducing efficiency. But it’s an easy filter to ignore, especially if you don’t [...]