i have a 1993 850glt,sometimes it would take a few trys to get it to start cranking,i got a used starter and put on it and thought all was well until i went out Sunday and it would not turn over,this morning i got in it and it was fine ,this afternoon nothing ,i put the orginal starter back on and nothing ,i replaced the solenoid twice ,any ideals? are they a relay or something?
the battery is up,and the connections are tight ,
Help!!!

 

The easiest way to try to find out if it is the starter is to wire a light bulb to the small wire on the starter and ground.This way everytime you turn the key to start you will see the light lightup.Then if nothing happens with the starter and the ligth is on then you know the used starter is bad.