1994 Nissan Maxima SE Auto

I am still driving my 1994 Nissan Maxima from 1994 and the car seems to pop or backfire when trying to accelerate from a full stop. Car also rumbles a
nd shakes at a stop. This only occurs in hot weather. Drove all winter with out a single issue. First day of summer with hot and humid weather and this starts again.
Has anyone seen this?
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