whistling noise when accelerating from a stop and increase in a knocking noise when accelerating from a stop when vehicle is warmed up on both problems.
Make, model, year, miles, and sevice history are needed here if you want anyone, even me to venture a guess.
2007 Dodge Nitro R/T 4.0 V6 BOUGHT CERTIFIED W/ 11,500 MILES, CURRENTLY 19,000 MILES. PER MILE ONE HERITAGE WAS A TRADE IN TO A SISTER DEALERSHIP. ACCORDING TO SERVICE RECORDS, NO NOTED PROBLEMS.