2.0 starts ideals willnot build over 2000 rpm i have already changed fuel pump assy,throttle position sensor, drop exhauste

Hello, you ask for answers to the question -- but - this is not a "textbook" concern that requires a standard explanation. Hands on testing is needed to find out what is happening with this vehicle. Without real data of fuel, air, spark and exhaust mixtures, engine temperature and other environmental readings, it's fully impossible to know and guess what is happening. https://repairpal.com/auto-repair-near-me Click the link or call us at 877-913-1554. We'll gladly find you a certified RepairPal shop in your area.