1998 Nissan Maxima 98 max sometimes it starts, sometimes it

Hi dsfunction69. Welcome to the forum. Describe the clicking sound. Is it a single kind of loud clunk each time you turn the ignition switch to "crank" or is it a buzzing, or continuous ratcheting sound as long as you hold the switch?

A long buzzing sound suggests the supply voltage is being lost before it gets to the starter relay and starter. When this occurs all the time, it's usually a bad battery, but when it's intermittent, it's usually a loose or corroded battery cable. A single clunk is usually caused by worn solenoid contacts, but since you've already replaced the solenoid with the starter, the next place to look is the large battery cable to the starter. Connect a grounded test light to the large starter terminal. You should find 12 volts there all the time. If it disappears when a helper cranks the engine, that cable is loose or is corroded apart. Peel back the insulation near each connection. The corrosion is often hidden underneath.

Caradiodoc

Sorry, I'm not a transmission expert. May I suggest you start a new post related to that problem. No one will read this conversation after they've seen the initial question and response. As a new posting, all of the experts here will see it and read it.

Caradiodoc