My starter just started to "click" when the key is turned (one loud click)so I had it checked and was told it was good I reinstalled it and the same click so I took the battery out had it tested and it tested good so I went and bought a new starter. The same "click one time" If you it out and have someone turn the key it will spin but lacks any power.. The jeep will roll start fine but not jump-start??? If anyone can help please I would be greatfull...1992 jeep wrangler 4.0L