Why does it sound like my endeavor needs to shift but rpms are great are

What is your question?

Why does it sound like my endeavor needs to shift but rpms are great also when turning right it goes away. The sound is present the whole time you drive except when turning right

What makes this problem better or worse?

It's better when you turn right

How long has your 2004 Mitsubishi Endeavor had this problem?

Since I bought it a few months ago