I think you need to go back to the battery and test both battery cables. Something has been overlooked. It sounds like a poor or corroded connection, like something is arching out. Check the connections again at the battery, the starter, the frame and the engine block. Don't just look at them. Take them off too. Sometimes a connection will look clean but underneath the bolt, it can tell another story. If I can answer anymore questions, please write back, good luck.
It is possible that you do have a defective starter. You need to either bench test it yourself or send it to a parts store to be bench tested. The service is free but call first. Not all Part Stores provide this service.It is possible that you do have a defective starter. You need to either bench test it yourself or send it to a parts store to be bench tested. The service is free but call first. Not all Part Stores provide this service.
Answers & Comments
I think you need to go back to the battery and test both battery cables. Something has been overlooked. It sounds like a poor or corroded connection, like something is arching out. Check the connections again at the battery, the starter, the frame and the engine block. Don't just look at them. Take them off too. Sometimes a connection will look clean but underneath the bolt, it can tell another story. If I can answer anymore questions, please write back, good luck.
It is possible that you do have a defective starter. You need to either bench test it yourself or send it to a parts store to be bench tested. The service is free but call first. Not all Part Stores provide this service.