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Squealing noise from engine bay on 2019 Acura ILX - Serpentine belt replacement?

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Brian F. · rep 0 · May 22, 4:59 AM · 1 replies · solved · Question

Vehicle: 2019 Acura ILX A-Spec

Hey everyone,

I've got a 2019 Acura ILX with the 2.4L engine, currently at about 70,000 miles. For the past few weeks, I've been hearing a distinct squealing noise coming from the engine bay, especially when I first start the car in the morning or when it's damp outside. It sometimes goes away after the engine warms up, but it's getting more frequent.

I suspect it might be the serpentine belt. What's the typical lifespan for these belts on an ILX? Is this something I can inspect myself, and if so, what should I be looking for? Any tips for replacing it if that's the issue?

Thanks for your help!

✓ Accepted solution

ClearTheCode Admin

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

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ClearTheCode admin answer:

The squealing noise you're hearing from your 2019 Acura ILX's engine bay is a classic symptom of a worn or loose serpentine belt. This belt is crucial as it drives multiple accessories like the alternator, power steering pump (if applicable), and AC compressor.

  1. Typical Lifespan & Inspection: Serpentine belts typically last between 60,000 to 100,000 miles, but this can vary based on driving conditions and engine bay temperatures. At 70,000 miles, it's definitely a prime candidate for replacement.

    • Visual Inspection: You can inspect the belt yourself. Look for: cracks, fraying, missing ribs, glazing (a shiny, smooth appearance), or excessive wear on the edges. Also, check for any oil or fluid contamination on the belt, which can cause slippage.
    • Tensioner Check: While inspecting the belt, also check the automatic belt tensioner. It should provide consistent tension. If it's weak or seized, it won't keep the belt tight, leading to squealing.

  2. Causes of Squealing:

    • Worn Belt: The rubber material hardens and loses its grip over time, causing it to slip on the pulleys.
    • Loose Belt: A failing tensioner or improper installation can lead to insufficient tension, allowing the belt to slip.
    • Contamination: Oil, coolant, or other fluids on the belt can reduce friction and cause squealing.
    • Failing Pulley/Bearing: Less common, but a failing bearing in one of the accessories (alternator, AC compressor, idler pulley) can also cause noise and put stress on the belt.

  3. DIY vs. Professional: Replacing the serpentine belt on your ILX is a moderately easy DIY task for someone with basic mechanical skills. You'll need a wrench (often a 14mm or 19mm, check your manual) to release the tensioner, and a diagram of the belt routing. It's important to route the new belt correctly. If you're comfortable working in tight engine spaces, it's definitely doable.

  4. When to See a Shop:

    • If you're unsure about the process, can't locate the tensioner, or struggle with routing the new belt, a professional can do it quickly and correctly.
    • If replacing the belt doesn't stop the squealing, or if you notice any play or grinding noises from the pulleys, it indicates a failing accessory bearing or tensioner, which requires professional diagnosis and repair.
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