What repairs are required for Engine backfire when gas pedal pressed? on 1998 Dodge Grand Caravan

Engine often backfires when at stop position and you start up even when gas pedal gently depressed. No other known engine or trans problem and all tires new same brand constant air pressure chexks. No excessive oil use in engine and mostly 17 & 18 miles per gallon city driving. Has new fuel tank fuel pump less than 5,000 miles ago.

What is normal cause of backfire?

Have vehicles computer checked for codes and provide them to us so we can be of more help. Backfire can be due to many things (timing, converter, fuel....)