Replace your cabin air filter
A clogged cabin air filter can damage your car’s blower motor and cause your AC to run longer and harder in the summer. Cabin air filters are easy to access and replace and you’ll save money by doing it yourself. Buy a replacement cabin air filter at any auto parts store and ask the retailer to print out the installation instructions. Cabin air filters are usually located in the air ducts behind the glove box in late model vehicles. However, some car makers locate them in the cowling or console area. Just remove the access covers and slide out the old filter. Note the direction of the airflow arrows so you can install the new filter in the proper orientation. Then reinstall the covers and you’re done.
Keep an eye on warning lights
Pay attention to your dashboard warning lights. Car owners think a glowing check engine light isn’t important because it just means you’ve got an “emissions problem.” Guess what? Emissions problems are almost always caused by an incomplete burn and that means you’re not getting the most bang for your buck. In other words, a check light means you’re wasting fuel. Worse yet, all that extra fuel goes right into your expensive catalytic converter, causing it to fail early. A new catalytic converter can be expensive to replace and then you STILL have to fix the underlying problem that turned on the check engine light in the first place. Many times the check engine light comes on due to a bum sensor or vacuum leak. Replacing a sensor or fixing a vacuum leak can save far more than what you’ll waste in reduced fuel economy.
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Source: RD Canada