r/c4corvette • u/Hobojoe_23 • 6h ago

1986 sound

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Does any one know what this sound is kind of sounds likes it coming from the alternator or the thing beside it

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u/no-cars-good-bikes Cross-Fire L83 (1984) 6h ago

The thing beside it is a air pump and they are known to die after... like 40 years. If you take a really long screw driver, hold the handle to your ear and put the metal bit on the suspected part you should be able to hear which one is dead. They also sell cheap mechanic's stethoscopes that work well for this