My 2009 dodge journey acts like it wont go over 40 mph.

Hello, there are multiple possible causes for this concern. Diagnostic testing should be performed, first checking for any diagnostic trouble codes (DTC's) that may have been set. Testing related to the throttle control as well as transmission performance should be performed. Check the air intake and exhaust system for any restrictions. A good tech near you can help! Use this link to find a shop near you. www.repairpal.com/repair-shops