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Reduced AC airflow & engine performance on 2023 Acura Integra - Air filter DIY?

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Jason D. · rep 0 · May 22, 4:59 AM · 1 replies · solved · Question

Vehicle: 2023 Acura Integra A-Spec

Hi everyone,

I've got a 2023 Acura Integra A-Spec with about 25,000 miles on it. Lately, I've noticed that the AC airflow isn't as strong as it used to be, and there's a slight musty smell when I first turn it on. Also, the engine seems a little less responsive, and my fuel economy has dipped slightly.

I'm thinking it might be time to check and possibly replace the cabin air filter and the engine air filter. What are the recommended intervals for these on the new Integra? Are these easy DIY jobs, or should I just take it to the dealership for service?

Thanks for any advice!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 4:59 AM

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ClearTheCode admin answer:

It sounds like your 2023 Acura Integra is showing classic signs of needing both its cabin air filter and engine air filter replaced. These are two of the easiest and most impactful maintenance items you can perform yourself.

  1. Recommended Intervals:

    • Cabin Air Filter: Acura generally recommends replacing the cabin air filter every 15,000 miles or 12 months, or more frequently if you drive in dusty environments or have allergies. At 25,000 miles, yours is definitely due.
    • Engine Air Filter: The engine air filter is typically recommended for replacement every 30,000 miles or 24 months, but again, dusty conditions can necessitate earlier replacement. While your Integra is just under the 30k mark, the symptoms suggest it's worth checking now.

  2. Causes of Symptoms:

    • Clogged Cabin Air Filter: A dirty cabin filter restricts airflow to the HVAC system, leading to reduced fan output and can trap moisture and mold, causing musty odors.
    • Clogged Engine Air Filter: A dirty engine air filter restricts the amount of clean air reaching the engine. This can lead to: reduced engine performance (as the engine struggles to 'breathe'), decreased fuel efficiency, and potentially even trigger a check engine light in extreme cases (though less common for just a dirty filter).

  3. DIY vs. Professional: Both cabin and engine air filter replacements are very easy DIY tasks, even for beginners. You typically won't need any special tools.

    • Cabin Air Filter: Usually located behind the glove box. You'll often just need to unclip or remove a few screws to drop the glove box down and access the filter tray.
    • Engine Air Filter: Located in a plastic airbox under the hood. You'll typically unclip a few metal clips or unscrew a few screws to open the airbox and swap out the filter.

  4. When to See a Shop:

    • If you're absolutely uncomfortable opening anything under the hood or behind the glove box, a shop can perform these services quickly. However, they often charge a premium for what is a very simple job.
    • If replacing both filters doesn't resolve the issues (e.g., AC airflow is still weak, or engine performance issues persist), then it would be time to visit a professional for further diagnosis. For AC, this could indicate a failing blower motor or a refrigerant issue. For engine performance, it could point to spark plugs, fuel system issues, or sensor problems.
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