How do I troubleshoot a faulty transmission in my Ford Ranger?

I've noticed some unusual shifting and grinding noises coming from my Ford Ranger's transmission. How can I diagnose and fix this issue?

I had a similar issue with my Ford Ranger's transmission and it turned out to be a clogged filter. Try replacing the filter and see if that solves the problem.

In my experience, faulty solenoids can also cause transmission problems. Have a mechanic check them out.

If the transmission fluid is low or old, it can also cause shifting issues. Try changing the fluid and see if that helps.