While driving with the front defroster on, something makes a popping noise under the hood.

2001 NISSAN ALTIMA
167,000 MILES
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KYLET93
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  • 2 POSTS
Its usually around 27005 rpm when I it makes the noise but seems to shift fine. Only happens when the front defroster is ones
Jan 25, 2012 at 2:59 AM
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JACOBANDNICKOLAS
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Are you sure the noise isn't from under the dash?
Jan 25, 2012 at 3:32 AM
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KYLET93
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Im not sure. Its only once in awhile and it's when it's about to shift into 3rd2nd gear. Its kind of like a small chirp
Jan 25, 2012 at 12:21 PM