Hi I have a 1997 Wrangler 6 cylinder 4.0L 5 speed, which has an 2 inch lift and 32 inch tires and lately I've been running it in 4 high cause my Universal Joints keep on breaking but i just noticed that whenever i shift up or shift down the transmission or the engine I'm not sure where exactly ,but it makes a strange sound as if my RPM's where low. If anyone has any ideas on what's going on it will be much help thanks.