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hi smells like your wiper bottle might need new water in it

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Well, You might check the cabin air filter. If it gets wet, mold will grow on it giving out the musty smell

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15y ago
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Q: What could be causing a strong musty smell in a 1997 Pontiac sunfire that seems worse after rain or after being closed up for several days but no leak or wetness has ever been discovered?
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