Automatic 91 Mazda mx6 overdrive is not working can you replace just the overdrive sylonoid instead of overhauling the tranny?

Yes, you can replace just the overdrive solenoid in a 1991 Mazda MX-6 without overhauling the entire transmission. The solenoid controls the engagement of the overdrive function, and if it's malfunctioning, replacing it may resolve the issue. However, it's essential to diagnose the problem accurately, as other transmission issues could also affect overdrive functionality. Before proceeding, consider consulting a mechanic to confirm that the solenoid is the root cause of the problem.