How to Inspect Serpentine Belt

6 steps 30 min Intermediate

Learn how to inspect serpentine belt with our detailed step-by-step guide. Follow our easy instructions to get it done right.

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Step-by-Step Instructions

1

Step 1: Locate Serpentine Belt

Find belt on front of engine - long ribbed belt wrapping around multiple pulleys.

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LED Flashlight

Bright light for inspecting belt in engine bay

$16.99
2

Step 2: Check Belt Tension

Press on belt between pulleys - should deflect only 1/2 inch with firm pressure.

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Belt Tension Gauge

Tool for measuring belt tension accurately

$29.99
3

Step 3: Inspect Ribbed Side for Cracks

Look at inner ribbed surface for cracks across ribs - sign of age and need for replacement.

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4

Step 4: Check for Glazing or Shiny Spots

Glazed (shiny smooth) belt indicates slipping - replace even if no cracks visible.

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5

Step 5: Look for Missing Chunks or Fraying

Check edges for fraying or chunks missing from belt - immediate replacement needed.

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6

Step 6: Replace if Over 60,000 Miles

Even if belt looks good, replace preventatively at 60-100k miles per manufacturer specs.

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Replacement Serpentine Belt

New belt for preventative replacement

$24.99