The large hose to the driver's side side tank on my radiator was loose today. I pushed the hose on and tightened it some. Does the plastic fail with time? Better to get new tank or rebuild? Tank likely fairly old- I think it has been replaced 9 yrs and 190K miles ago(321K miles now.)

Also I have had failure to start after work 2 days in a row. Lights are bright but no crank. I wiggle the trans, put the key in and out, invoke the gods and then the engine cranks after several maneuvers. In the morning there is no problem. Is there a way to check the neutral safety switch with episodic problems?

Thanks