Green’s Dictionary of Slang

1. a repeated heavy thump or a continued banging noise; also as v., to hit repeatedly.

1897		R. Morton ‘His Sweet Capacious Smile’ 🎵 When I smiled a sweet, capacious smile, De thing went bing, bang, bish.
1929		(con. WWI) H. Odum Wings on My Feet 259: ‘Done laid them Heinies low.’ ‘Done bing-banged ’em on the Rhine.’.
1937–84		Partridge DSUE (1984) 80/1: from ca. 1910.

2. as excl. indicating a sudden action.

1974

G. Radano Stories Cops Only Tell Each Other 84: Well, the big strangers approach their objective from different directions and they go to work. Bing, bang, pow! They beat the cruller off everyone on that corner.