Summer Survival: DIY Car AC Troubleshooting Tips Every Driver Should Know
Automotive

Summer Survival: DIY Car AC Troubleshooting Tips Every Driver Should Know

There might not be anything as miserable as driving your car on a scorching hot day without a working air conditioner (AC). However, the inverse of th

Jordan McDowell
Jordan McDowell
5 min read

There might not be anything as miserable as driving your car on a scorching hot day without a working air conditioner (AC). However, the inverse of that statement is actually also true- a strong car AC can not only make a summer drive bearable, but actually enjoyable. This is why it’s of the utmost importance to be educated about your car’s air conditioning system and what to do when you suspect it isn’t working properly.

You don’t have to be a master technician with decades of experience to diagnose AC issues in your vehicle. In fact, there are some common DIY fixes that will not only correct some of your air conditioning issues, but they’ll likely save you hundreds of dollars in costly repair bills. You just need to know what to look for.

DIY Quick A/C Fixes

When people think of DIY, they often imagine crafty gifts or long, arduous home improvement projects. With car repairs, many different DIY projects can be done in the comfort of your own home. From installing aftermarket ignition coils to changing your oil, knowing how to work on your car can not only save you money but also be quite enjoyable. And when it comes to DIY troubleshooting your car’s air conditioning system, often it’s as simple as looking at the parts and knowing where the problem might occur.

Check Your Air Filter

Believe it or not, if your car’s air conditioner isn’t blowing strongly or cold enough, the fix could be as simple as replacing a cheap air filter. A clogged or excessively dirty air filter can result in reduced air flow from the AC as well as a mildewy, unpleasant smell.

Clean the Radiator and Condenser

Another extremely quick DIY fix for a potential AC problem is to look for debris under the hood. Locate your car’s radiator and condenser. Once found, notice if there are any leaves, sticks, dirt, or any other grime built up that could prevent them from working correctly. Simply clean those areas, and you should have better air flow.

Check Electrical Components

This fix is a bit more hands-on than the previous two, but it’s definitely not something that should intimidate a car owner with little to no repair experience. First, if you notice the heater fan is only blowing at a high speed, all you need to do is check your fuses to see if one of them is blown. Another electrical system to check is the actual connections to your AC compressor. If you notice a loose connection or damage to wires, that could also be the issue.

Examine the Refrigerant Level

While this requires additional tools that you might have to purchase before you attempt to fix, checking the refrigerant level of your AC system is actually something most people can do on their own. Buy a refrigerant test kit with a gauge. Once you do this, you just use that to determine if your system needs more refrigerant. As you might have guessed, it’s important to follow the instructions of the testing kit thoroughly to ensure you are doing it correctly.

Routine Maintenance is Key

Quick DIY fixes for your car are great, sure, but many issues can be addressed with routine maintenance on your vehicle. All you need to do, as the vehicle owner, is be informed about what to ask for and how often.

Perhaps the easiest maintenance to perform on your vehicle to ensure proper function of your air conditioner is to regularly replace the cabin air filter. As mentioned above, if this part is dirty or clogged, it can easily affect the performance of your AC. As far as preventative maintenance goes, you should occasionally run your air conditioner in your vehicle during the winter months. This isn’t something that needs to happen all the time, but occasional use during colder times ensures your seals will not become dry or cracked, which could lead to leaks. Finally, one of your yearly maintenance items for your vehicle should be a routine AC check done by a professional. They can check your refrigerant levels and look for leaks.

If you take care of your vehicle and perform these maintenance items regularly, you can easily avoid costly repair bills down the line.

Sometimes You Need an Expert

This should go without saying, but just to be safe: don’t be scared to seek an expert’s opinion. If it’s not a simple diagnosis, as described above, don’t waste time and money trying to buy parts that might not fix the issues. A wrong DIY repair can do more damage and require even more professional work. So, if it feels like a bigger problem, go to an established, professional repair shop.

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