How do you use the overdrive 2002 Jeep Liberty sport 3.7?

The 2002 Jeep Liberty Sport 3.7L doesn't have an "overdrive" in the sense of a button or switch you can engage or disengage like some older vehicles. The 4-speed automatic transmission in that vehicle *always* uses overdrive in its highest gear (4th gear). This gear is designed for fuel efficiency at higher speeds.

There's no way to "turn off" overdrive on this specific model. If you're experiencing issues you might think are related to overdrive, the problem likely lies elsewhere:

* Transmission Problems: If the transmission isn't shifting smoothly or is slipping, it could be a sign of a more serious mechanical issue requiring professional attention.

* Engine Performance: Poor engine performance can affect how the transmission operates. Check for issues like misfires, clogged air filter, or low engine oil.

* Incorrect Fluid Levels: Low or dirty transmission fluid can cause significant problems.

If you're having trouble with your 2002 Jeep Liberty's transmission, you should take it to a qualified mechanic for diagnosis and repair. They can properly assess the problem and determine the necessary steps.