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Nissan Altima Cold Air Intake

Symptoms of a Faulty Nissan Altima Cold Air Intake

The Nissan Altima cold air intake is an add-on component that can increase your engine's power, improve engine cooling, and increase fuel efficiency. However, if you hear low revving in the engine or any abnormal noise from the intake system, then there must be something wrong with the part. To diagnose this component, take note of these common symptoms:

Abnormal or excessive noises

This symptom is common among aftermarket cold air intakes because they require the resonator-based muffling tubes that stock air filtration systems have. If you remove these tubes, then the noise from the cold air intake would increase.

Another possible cause for excessive noise is a loose hose clamp. If at least one of these is loose, small debris may be sucked into the component through the clamp's gap. You'll know that this is your problem when you can hear excess noise coming from the cold air intake especially at higher RPMs.

To check for any abnormal noises, pop the hood of your vehicle and rev the engine while a friend listens for any strange noises outside your car.

Inaccurate mass air flow sensor

If you notice that your car's engine sounds like it is revving lower than needed, then the mass air flow sensor might be incorrectly measuring the air that's being sucked into the engine. Check for loose wiring connections in the cold air intake as this might be the root cause. Also, check the mass air flow sensor plug if it's placed properly.

Less horsepower or below-average fuel efficiency

A cold air intake can increase your engine's horsepower and improve your car's fuel efficiency. If you notice that your engine is performing on less horsepower than usual, or if your car's fuel efficiency is lower than normal, then there might be something wrong with the component.

Inspect the filter and see if it is clogged up or dirtied. If it is, you may have to change it in order to allow the cold air intake to optimize its performance.

Smoke from the engine

If the cold air intake's filter comes in contact with water, there might be a chance of the water getting sucked into the engine, which could then cause major damage. When, after driving through a flood or a deep puddle, and you see smoke coming from the engine, then the intake might have sucked in some water. If this does happen, immediately pull over and turn off the engine to prevent further damage.

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  • Ways to Maintain and Optimize Your Nissan Altima Cold Air Intake's Efficiency 04 March 2014

    The Nissan Altima cold air intake is a great addition to your car's engine, as its increased volume of air provided for the combustion process can increase the engine's power. However, if left alone, the component may not perform as well as you want it to. To keep the cold air intake in top shape, take note of these useful maintenance tips.

    • Clean the cold air intake every 50,000 miles.
    • The whole component itself need not be cleaned. However, its filter needs to be cleaned every 50,000 miles.
    • Cleaning the filter depends on what type of material it's made of.
    • If it's an oiled cotton filter, get a cleaning kit and follow the instructions given. You can also use detergent to wash the component. This filter should also be re-oiled every 50,000 miles.If the cold air intake has a paper filter (which is usually the component's default), then check it every 50,000 miles. You can simply tap most of the grit and debris out. You should also replace the paper filter every one-and-a-half years or every 25,000 miles, whichever comes first.Meanwhile, steel mesh filters can just be rinsed out with water.
    • Do not use too much oil on the filter.
    • Oiled cotton filters require only a small amount of oil, as the excess can contaminate the mass air flow sensor and interfere with its readings. To make sure that you don't put in too much oil, you can lightly spray the entire filter. Another fool-proof way to know that your filter doesn't have too much oil is to weigh it using a kitchen scale. The newly oiled component should weigh 669 grams-no more, no less. Remember that less oil would make the filter less efficient in trapping dust.
    • Dry the cold air intake filter completely before oiling it.
    • After washing the filter, you can dry it out in the sun for a faster process. Don't worry about the temperature affecting the component-the cold air intake filter is tough against heat.
    • Do a regular visual inspection of the system to make sure that everything is in place.
    • Check the wiring connections to make sure that nothing's loose, make sure that the hose clamps are all sealed tight, and see if the filter is placed correctly. Doing so will save you from a lot of possible inconveniences in the future.